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Question 13, 3.3.31
HW Score: 75%, 12 of 16 points
O Points: 0 of 1
The larger number is and the smaller number is
The sum of two numbers is 1. Three times the larger number plus two times the smaller number is 18. Find the numbers.
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The solution of the system of equations given is (-7/2, 11/2)

A set of simultaneous equations, also known as a system of equations or an equation system, is a finite set of equations for which common solutions are sought.

Given that, a system of equations using any method x+y = 2 and -3x-y = 5,

The equations are:

x+y = 2...(i)

-3x-y = 5...(ii)

Since, the signs of y variable in the both equations are opposite, if we add both the equations the y variable will get eliminated,

Therefore, the most suitable method to solve is elimination method,

Adding equations i and ii,

(x+y = 2) + (-3x-y = 5)

-2x = 7

x = -7/2

Put x = -7/2 in eq(i)

-7/2 + y = 2

-7 + 2y = 4

2y = 11

y = 11/2

Hence, the solution of the system of equations given is (-7/2, 11/2)

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The expected number of points per roll is -1.5.

It is the chance of an event to occur from a total number of outcomes.

The formula for probability is given as:

Probability = Number of required events / Total number of outcomes.

We have,

Outcomes when rolling a number cube.

= 1, 2, 3, 4, 5, or 6.

If the number is odd, you win the same number of points as the number on the cube.

So,

If the number is 1, you win 1 point.

If the number is 3, you win 3 points.

If the number is 5, you win 5 points.

Now,

If the number is even, you lose 4 points.

If the number is 2, you lose 4 points.

If the number is 4, you lose 4 points.

If the number is 6, you lose 4 points.

The probability of rolling an odd number.

= 3/6

= 1/2

Similarly,

The probability of rolling an even number.

= 3/6

= 1/2

Now,

The expected number of points per roll.

= Probability of rolling an odd number x (1 + 3 + 5) + Probability of rolling an even number  x (-4 - 4 - 4)

= (1/2) x (1 + 3 + 5) + (1/2) x (-12)

= (1/2) x 9 - 6

= 9/2 - 6

= (9 - 12)/2

= -3/2

= -1.5

Thus,

The expected number of points per roll is -1.5.

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Please report this so a moderator can delete this answer. I was not finished with my answer and accidentally posted it. I will not have enough time to add it before the editing timer is up.

The price that corresponds to an elasticity of 1.2 for this product is $59.85.

Elasticity is a fundamental concept in economics that measures the responsiveness of demand to changes in price. In this problem, we will use the calculus-based definition of elasticity to find the price that corresponds to a specific elasticity value.

The elasticity of demand measures the percentage change in quantity demanded that results from a 1% change in price. Mathematically, the elasticity of demand is defined as:

E = (%ΔQ / %ΔP) * (P / Q)

where E is the elasticity of demand, %ΔQ is the percentage change in quantity demanded, %ΔP is the percentage change in price, P is the price of the product, and Q is the quantity demanded.

To find the price that corresponds to an elasticity of 1.2, we need to solve for P in the elasticity equation above. Since we know the demand function D(p) = -5p² + 270,000, we can find Q by taking the derivative of the demand function with respect to price:

Q = D'(p) = -10p

Then, we can plug in Q and E = 1.2 into the elasticity equation and solve for P:

1.2 = (%ΔQ / %ΔP) * (P / Q)

1.2 = (%ΔQ / -1%) * (P / (-10p))

1.2 = (%ΔQ / -0.01) * (1 / -10)

%ΔQ = -0.0144

This means that a 1% increase in price will result in a 0.0144% decrease in quantity demanded, given an elasticity of 1.2. Now, we can plug in %ΔQ and Q into the demand function to solve for P:

-0.0144 = (D(p + 0.01P) - D(p)) / D(p)

-0.0144 = (-5(p + 0.01P)² + 270,000 - (-5p² + 270,000)) / (-5p² + 270,000)

-0.0144 = (-0.1P - 0.0005p²) / (-5p² + 270,000)

P = $59.85

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Area of the triangle which is the land that the university acquired is 3 miles².

Area of a two dimensional shape is the total region which is bounded by the object's shape.

The land acquired by the university is in the shape of triangle.

Half of the base has length of 1.5 miles.

Total length of base = 2 × 1.5 = 3 miles

Height of the base = 2 miles

Area of the triangle = [tex]\frac{1}{2}[/tex] × base × height

                                 =  [tex]\frac{1}{2}[/tex] × 3 × 2

                                 = 3 miles²

Hence the area of the land is 3 miles².

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Answer:

Step-by-step explanation:

48 x 10 = 480 so you can go 480 miles before you run out of gas.

The ordered bases for the T-cyclic subspaces generated by z in (a), (b), (c), and (d) are[tex]B={e1, Te1, T^2e1, T^3e1}, B={x^3, 3x^2, 6x, 6}, B={(0 1 1 0), (1 0 0 1), (0 1 -1 0), (-1 0 0 -1)}[/tex] and [tex]B={(0 1 1 0), (1 2 2 2), (2 3 3 3), (3 4 4 4)}[/tex], respectively.

a)The T-cyclic subspace generated by z = e1 = (1,0,0,0) is spanned by the vectors e1, [tex]Te1=(1,b,-c,a+d), T^2e1=(b,-c,a+c,2a+d)[/tex] and [tex]T^3e1=(-c,a+c,2a+d,3a+2d)[/tex]. So the ordered basis for the T-cyclic subspace generated by e1 is [tex]B={e1, Te1, T^2e1, T^3e1}[/tex].

b)The T-cyclic subspace generated by [tex]z=x^3[/tex] is spanned by the vectors [tex]x^3, Tx^3=3x^2, T^2x^3=6x, T^3x^3=6[/tex]. So the ordered basis for the T-cyclic subspace generated by x^3 is [tex]B={x^3, 3x^2, 6x, 6}[/tex].

c)The T-cyclic subspace generated by z=(0 1 1 0) is spanned by the vectors (0 1 1 0), [tex]T(0 1 1 0)=(1 0 0 1), T^2(0 1 1 0)=(0 1 -1 0), T^3(0 1 1 0)=(-1 0 0 -1)[/tex]. So the ordered basis for the T-cyclic subspace generated by (0 1 1 0) is [tex]B={(0 1 1 0), (1 0 0 1), (0 1 -1 0), (-1 0 0 -1)}[/tex].

d)The T-cyclic subspace generated by z=(0 1 1 0) is spanned by the vectors (0 1 1 0). So the ordered basis for the T-cyclic subspace generated by (0 1 1 0) is [tex]B={(0 1 1 0), (1 2 2 2), (2 3 3 3), (3 4 4 4)}[/tex].

The ordered bases for the T-cyclic subspaces generated by z in (a), (b), (c), and (d) are [tex]B={e1, Te1, T^2e1, T^3e1}, B={x^3, 3x^2, 6x, 6}, B={(0 1 1 0), (1 0 0 1), (0 1 -1 0), (-1 0 0 -1)}[/tex], and [tex]B={(0 1 1 0), (1 2 2 2), (2 3 3 3), (3 4 4 4)}[/tex], respectively.

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The new cereal box requires 11 square inches less cardboard to construct than the original cereal box.

The amount of cardboard required to build a cereal box is determined by its surface area, which includes all six sides of the box.

The original cereal box's surface area can be calculated as follows:

2 * 2.5 * 12 = 60 square inches for the front and back faces

2 * 7 * 12 = 168 square inches on the side faces

2 * 2.5 * 7 = 35 square inches for the top and bottom faces

Surface area total: 60 + 168 + 35 = 263 square inches

Using the new base dimensions, the surface area of the new cereal box can be calculated in the same way:

2 * 3 * 12 = 72 square inches for the front and back faces

2 * 6 * 12 = 144 square inches on the side faces

2 * 3 * 6 = 36 square inches for the top and bottom faces

Surface area total: 72 + 144 + 36 = 252 square inches

To calculate the difference in cardboard required to construct the two cereal boxes, subtract the new box's surface area from the original box's surface area:

263 - 252 = 11

As a result, the new cereal box uses 11 square inches less cardboard than the original cereal box.

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Answer:

The amount the company charges in dollars can be represented as a linear function of the number of hours the employee works. We can use the slope-intercept form of a linear equation to graph this relationship:

y = mx + b

where y is the amount charged in dollars, x is the number of hours worked, m is the hourly rate charged by the company, and b is the initial charge for coming to the customer's home.

In this case, we have:

m = $50/hour (hourly rate)

b = $25 (initial charge)

Substituting these values into the equation, we get:

y = 50x + 25

This is the equation of a line with a slope of 50 and a y-intercept of 25. To graph this line, we can plot the y-intercept at (0, 25) and then use the slope to find other points on the line. For example, if the employee works for 1 hour, the company will charge:

y = 50(1) + 25 = $75

So we can plot the point (1, 75) on the graph. Similarly, if the employee works for 2 hours, the company will charge:

y = 50(2) + 25 = $125

So we can plot the point (2, 125) on the graph.

By connecting these points with a straight line, we get the graph of the linear function that represents the relationship between the number of hours worked and the amount charged by the company:

Step-by-step explanation:

The value of the equation 7.4×10⁻⁸=6.7×10⁻⁹ is 6.73×10⁻⁸

A number system is defined as a system of writing to express numbers.

The given expression is 7, point, 4, dot, 10, start superscript, minus, 8, end superscript, minus, 6, point, 7, dot, 10, start superscript, minus, 9, end superscript, equals

7.4×10⁻⁸=6.7×10⁻⁹

Now let us take 6.7×10⁻⁹ to left hand side

7.4×10⁻⁸-6.7×10⁻⁹

Factor 10⁻⁸ from both terms

10⁻⁸(7.4-0.67)

6.73×10⁻⁸

Hence, 6.73×10⁻⁸ is the value of the equation 7.4×10⁻⁸=6.7×10⁻⁹

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The complete question will be as below

Find the simplest form of the equation 7.4×10⁻⁸=6.7×10⁻⁹?

The difference between the highest guess and the lowest guess, in the whole number, is 120.

Mathematical operations include subtraction. It is employed in order to exclude phrases or objects from the expression.

Given:

A table that shows the relationship between the guessed amount and the number of weeks.

Week          Amount

1                      120

2                      140

3                      160

4                      240

Here, the highest guess is 240.

And the lowest guess is 120.

The difference  between the highest guess and the lowest guess,

= 240 - 120

= 120

120 is a whole number.

Therefore, 120 is the required number.

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The complete question:

A table that shows the relationship between the guessed amount and the number of weeks.

Week          Amount

1                      120

2                      140

3                      160

4                      240

What was the difference between the highest guess and the lowest guess? Write your answer as a fraction, mixed number, or whole number

Answer:

It has letters

Step-by-step explanation:

The given statement can be expressed in terms of c(x), d(x), f(x), quantifiers, and logical connectives as follows:

a) ∃x(C(x) ∧ D(x) ∧ F(x))

b) ∀x(C(x) ∨ D(x) ∨ F(x))

c) ∃x(C(x) ∧ F(x) ∧ ¬D(x))

d) ¬∃x(C(x) ∧ D(x) ∧ F(x))

e) ∀y∃x(P(x, y))

All of the pupils in your class should be a set. The domain is the set X. Denote

[tex]C(x)-'x has a cat'\\D(x)- 'x has a dog'\\F(x)- 'x has a ferret'[/tex]

a) A kid in your class owns a cat, a dog, and a ferret, so take that into consideration. This implies that ∃x ∈ X so that C(x), D(x), and F(x) are all true assertions. Using quantifiers, logical connectives, and C(x), D(x), and F(x) we can express that as follows.

∃x(C(x) ∧ D(x) ∧ F(x))

b) Take into account the claim that "Every student in your class has a cat, a dog, or a ferret." This proves ∀x ∈ X at least one of the claims made by C(x), D(x), and F(x) to be true. Using quantifiers, logical connectives, and C(x), D(x), and F(x) we can express that as follows.

∀x(C(x) ∨ D(x) ∨ F(x))

c) Take into account the claim that "Some student in your class has a cat and a ferret, but not a dog." Accordingly, ∃x ∈ X, statements C(x), F(x), and the negation of statement D(x) are true. Using quantifiers, logical connectives, and C(x), D(x), and F(x) we can express that as follows.

∃x(C(x) ∧ F(x) ∧ ¬D(x))

d) Take into account the claim that "No student in your class has a cat, a dog, and a ferret." This indicates ∀x ∈ X that neither C(x), D(x), nor F(x) is true. As a denial of the claim in section a), we may state that in terms of C(x), D(x), and F(x) by using quantifiers and logical connectives as follows.

¬∃x(C(x) ∧ D(x) ∧ F(x))

a) Take into account the adage, "There is a student in your class who has this animal as a pet. The three animals are cats, dogs, and ferrets."

This indicates that an element X from the domain exists for each of the propositions C, F, and D such that each statement is true.

Using quantifiers, logical connectives, and C(x), D(x), and F(x) we can express that as follows.

∀y∃x(P(x, y))

The complete question is:-

Let C(x) be the statement "x has a cat," let D(x) be the statement "x has a dog," and let F(x) be the statement "x has a ferret." Express each of these statements in terms of C(x), D(x), F(x), quantifiers, and logical connectives. Let the domain consist of all students in your class. a) A student in your class has a cat, a dog, and a ferret. b) All students in your class have a cat, a dog, or a ferret. c) Some student in your class has a cat and a ferret, but not a dog. d) No student in your class has a cat, a dog, and a ferret. e) For each of the three animals, cats, dogs, and ferrets, there is a student in your class who has this animal as a pet.

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From the given information it cannot be determined whether it is a relation or function.

In mathematics, a function is a relationship between two sets of elements, where each element in the first set (the domain) corresponds to a unique element in the second set (the range). In other words, a function takes an input from the domain and produces a unique output from the range.

In mathematics, a relation is a set of ordered pairs that describes a relationship between two sets of elements. The ordered pairs typically consist of one element from each set, and the relationship between the two elements is defined by some rule or condition.

To determine whether the relation is a function, we need to check whether each input (type of washing machine) has a unique output (amount of water used per load), or whether there are multiple outputs for some inputs.

If each type of washing machine has a unique amount of water used per load, then the relation is a function. If there are multiple amounts of water used per load for some types of washing machines, then the relation is not a function.

Without knowing the data that Keon recorded, we cannot determine whether the relation is a function. We would need to see the data and check whether there are any types of washing machines that have multiple amounts of water used per load recorded, or whether each type of washing machine has a unique amount of water used per load recorded.

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Answer:

  3

Step-by-step explanation:

You want side QR in parallelogram PQRS having side PS marked as 3.

Opposite sides of a parallelogram are the same length, so ...

  QR = PS = 3

The length of QR is 3 units.

__

Additional comment

In a parallelogram, opposite sides are parallel and are the same length. Opposite angles have the same measure, and adjacent angles are supplementary. The diagonals bisect each other, but are usually different lengths and usually do not cross at right angles.

(If diagonals are the same length, it is a rectangle; if they cross at right angles, it is a rhombus. A rectangular rhombus is a square.)

The region bounded by[tex]x=3√3y,x=0,y=5[/tex] is rotated about the y-axis to form a solid. The volume of this solid is V. The region, the solid and a typical disk or washer can be sketched using the given curves.

To calculate the volume V of the solid obtained by rotating the region bounded by [tex]x=3√3y,x=0,y=5[/tex]about the y-axis, we will use the equation [tex]V=π∫a b[(R)^2-(r)^2]dy,[/tex] where R is the outer radius, r is the inner radius, a is the lower limit of the integral and b is the upper limit of the integral. Substituting the given values, we get

[tex]V=π∫0 5[(3√3y)^2-(0)^2]dy[/tex]

This simplifies to [tex]V=π∫0 5[9y^2]dy.[/tex] Integrating this expression, we get [tex]V=π(5^3-0^3)[/tex]. Substituting the limits, we get [tex]V=π(5^3-0^3)[/tex]. This simplifies to V=125π. Hence, the volume of the solid is 125π.

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Answer:

Step-by-step explanation:To evaluate F(x) at a specific value, we simply replace x with that value in the expression for F(x). In this case, we want to find F(-3), so we substitute -3 for x in the expression for F(x):

F(-3) = 3(-3) - 5

Simplifying the right-hand side:

F(-3) = -9 - 5

F(-3) = -14

Therefore, F(-3) = -14.

A function f with domain R is strictly increasing provided that - f(x) < f(y).

A function f with domain R is not strictly increasing provided that - f(x) >= f(y).

A function f with domain R is not strictly increasing provided that -  x < y, but f(x) >= f(y)

(a) A function f with domain R is strictly increasing provided that for all real numbers x and y, if x < y, then f(x) < f(y).

(b) A function f with domain R is not strictly increasing provided that there exist real numbers x and y such that x < y, but f(x) >= f(y).

(c) A function f with domain R is not strictly increasing provided that there exist two real numbers x and y such that x < y, but f(x) >= f(y), i.e., the function does not strictly increase between x and y.

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The largest and smallest degree of f(x) + a * g(x) if  a be a constant is 4 and 1 respectively.

According to the question  f(x) = x^4-3x^2 + 2 and g(x) = 2x^4 - 6x^2 + 2x -1

f(x) + a * g(x) = x^4-3x^2 + 2 + a( 2x^4 - 6x^2 + 2x -1)

                    = x^4(1 + 2a)x^4 +(-3-6a)x^2 +2 + 2ax -a

The term with the largest exponent is (1 +2a)x^4, which has degree 4. This term will be non-zero for a ≠ -1/2.

The largest possible degree of f + ag is 4

When a = -1/2, the first two terms disappear and the sum becomes

f + ag = -x +1/2

The smallest possible degree of f + ag is 1.

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The range of the costs of the surfboard rentals is $ 140.

The interquartile range of the costs is $ 56.

The cost of 6 days of rentals is an outlier.

To find the range, first find the costs of renting the surfboards on the different days.

1 day :

= 28 x 1

= $ 28

2 days :

= 28 x 2

= $ 56

3 days :

= 28 x 3

= $ 84

6 days :

= 28 x 6

= $ 168

The cost can therefore be ordered to be :

28, 28, 28, 56, 56, 56, 84, 84, 84, 168

The range is :

= Largest - Least

= 168 - 28

= $ 140

The interquartile range is :

= Q 3 - Q1

Q 3 :

= 75 / 100 x 10 costs

= 7.5

= $ 84 in the cost arrangement

Q1 :

= 25 / 100 x 10

= 2. 5 position

= $ 28 in the cost arrangement

The IQR is :

= 84 - 28

= $ 56

The cost of 6 days of rentals is an outlier as it is much larger than the rest of the costs.

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A home priced at $200,000 is the same distance from the mean price in Florida and Ohio.

The z-score of a measure X of a variable that has mean symbolized by [tex]\mu[/tex] and standard deviation symbolized by [tex]\sigma[/tex] is obtained by the rule presented as follows:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The z-score represents how many standard deviations the measure X is above or below the mean of the distribution, depending if the obtained z-score is positive or negative.

For Florida, the z-score of a home priced at $240,000 is given as follows:

Z = (200000 - 240000)/16000

Z = -2.5.

For Ohio, the z-score of a home priced at $240,000 is given as follows:

Z = (200000 - 170000)/12000

Z = 2.5.

Same absolute value of z-score, hence the houses are the same distance from the mean for each state.

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In a case whereby you have 1,000,000 number cubes, each measuring one inch on a side. If you arranged the cubes on the floor to make a square, then the square would fit in your classroom.

You possess one inch on each side, one million number cubes. How tall would the cubes be if they were placed one on top of the other to form a massive tower?

The fact that the high of one cube= 1 inch

The high of 1,000,000 cubes can be calculated as :

=1*1,000,000 = 1,000,000= 1 * 10^6 inch.

The area of a square A= b^2

b= length side of the square

1,000,000 = b^2

b = 1000 inch

Therefore, the dimensions of the square  can be expressed as ( 1,000 in x 1,000 in)

But 1 in = 2.54 cm

1,000 inch = (1,000*2.54)

=2,540 cm-

=25.40 meters

Considering this in metres, the dimensions of the square can be expressed as: ( 25.40 m x 25.40 m)

We can conclude that it possible that the square will fit in the classroom.

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The equation of the solution passing through (-1,0) is y = x + eˣ.

A slope field is a graphical representation of the solutions to a differential equation at different points in the xy-plane.

In this problem, we are given the equation y = -x + y and asked to sketch the solutions that pass through three different points: (0,0), (-3,1), and (-1,0). To do this, we first plot each of these points on the slope field and draw a short line segment with the same slope as the slope at that point. By repeating this process for several points, we can obtain a rough sketch of the solution curve passing through each point.

Once we have sketched the solution curves, we can try to find the equation of the solution passing through (-1,0). To do this, we need to integrate the differential equation y = -x + y with respect to x, which involves finding the antiderivative of -x + y. In this case, we can use the method of separation of variables to write the differential equation as:

dy/dx = y - x

Dividing both sides by y - x, we get:

dy / (y - x) = dx

Integrating both sides, we obtain:

ln|y - x| = x + C

where C is the constant of integration. Exponentiating both sides and simplifying, we get:

y - x = Ceˣ

where C is the constant of integration. To find the value of C, we can use the initial condition that the solution passes through (-1,0), which means that:

0 - (-1) = Ce⁻¹

Simplifying, we get:

C = e

Substituting this value of C into the equation for the solution, we get:

y - x = eˣ

which is the equation of the solution passing through (-1,0). We can verify that this solution is correct by checking that it satisfies the original differential equation:

dy/dx = y - x

Substituting y = x + eˣ, we get:

d/dx(x + eˣ) = (x + eˣ) - x

Simplifying, we get:

eˣ = eˣ

which is true.

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Complete Question:

The slope field for the equation y = -x + y is shown below EN On a print out of this slope field, sketch the solutions that pass through the points (1) (0,0); (ii) (-3,1); and (iii) (-1,0). From your sketch, what is the equation of the solution to the differential equation that passes through (-1,0)? (Verify that your solution is correct by substituting it into the differential equation.)

All the statements are false and the reasons are given in the explanation.

The hypothesis and the conclusion are the two components of this form of statement. This is usually used in logic

Using "if" and "then," a conditional statement links its hypothesis and conclusion. Consequently, the phrase is also known as a "if-then statement."

Now in the given question.

P =  you work in a hospital

Q  = you are a doctor

a. Converse

Q →  P     False.....not all doctors work in a hospiial

b. Inverse

not P  →  not Q    False.....same as before

c. Contrapositive

not Q  →  not P        False.....other people besides doctors work at a hospital.

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Answer:

Its not A!!!!!!!!!!!!!!!!!!!!!!!!

Step-by-step explanation:

Its not!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

If the slope of the line is 0, that means the y axis do not change. So the equation for the line is y = -9.

The line is said to have a slope 0 and passes through point(3,-9).

Equation for the slope is

m = y-y₁/ x-x₁

Rearranging the equation, we get

y-y₁ = m (x-x₁)

Here m = 0

So, y- y₁ = 0 (x-x₁)

    y-y₁ = 0

Here a point is given as (3,-9)

3 is the x-coordinate and -9 is the y-coordinate. So taking y₁ as -9

y - ⁻9 = 0

y + 9 = 0

y = -9

So the equation for the line is y= -9

For more information regarding equation for a line, kindly refer

https://brainly.com/question/29249787

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