The normalized vector is:
V[tex]_{hat}[/tex] = v / |v| = (1/√3)i + (1/√3)j - (1/√3)k
What is algebra?Algebra is a branch of mathematics that deals with mathematical operations and symbols used to represent numbers and quantities in equations and formulas.
a) To normalize the vector u = 15i - 6j + 8k, we need to divide it by its magnitude:
|u| = sqrt(15² + (-6)² + 8²) = sqrt(325)
So, the normalized vector is:
[tex]u_{hat}[/tex] = u / |u| = (15/√325)i - (6/√325)j + (8/√325)k
Similarly, to normalize the vector v = pi i + 7j - kb, we need to divide it by its magnitude:
|v| = √(π)² + 7² + (-1)²) = √(p² + 50)
So, the normalized vector is:
[tex]V_{hat}[/tex] = v / |v| = (π/√(p² + 50))i + (7/√(p² + 50))j - (1/√(p² + 50))k
b) To normalize the vector u = 5j - i, we need to divide it by its magnitude:
|u| = √(5² + (-1)²) = √(26)
So, the normalized vector is:
[tex]u_{hat}[/tex] = u / |u| = (5/√(26))j - (1/√(26))i
Similarly, to normalize the vector v = -j + ic, we need to divide it by its magnitude:
|v| = √(-1)² + c²) = √(c² + 1)
So, the normalized vector is:
[tex]V_{hat}[/tex] = v / |v| = - (1/√(c² + 1))j + (c/√(c² + 1))i
c) To normalize the vector u = 7i - j + 4k, we need to divide it by its magnitude:
|u| = √(7² + (-1)² + 4²) = √(66)
So, the normalized vector is:
[tex]u_{hat}[/tex] = u / |u| = (7/√(66))i - (1/√(66))j + (4/√(66))k
Similarly, to normalize the vector v = i + j - k, we need to divide it by its magnitude:
|v| = √(1² + 1² + (-1)²) = √(3)
So, the normalized vector is:
[tex]V_{hat}[/tex] = v / |v| = (1/√(3))i + (1/√(3))j - (1/√(3))k
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Katelynn is excited about her trip to Chicago with her orchestra. She needs to raise $500 in order to go. She decides to make and sell scarves in order to fund her trip. In order to make each scarf, she will need $3 worth of yarn. If she plans on making 100 scarves, how much must she charge for each scarf in order to be able to pay for her trip?
Answer:
$8 each scarf
Explanation:
Let the selling price for each scarf be x,
Formula:
unit amount(selling price - cost price) = total profit
Stepwise:
100(x - 3) = 500
100(x) - 100(3) = 500
100x - 300 = 500
100x = 500 + 300
100x = 800
x = 8
PLEASE HELP!!! THIS IS TIMED!!! PLEASE HELP ASAP!! How many solutions does this system have?
2 x minus 3 y = 10. Negative 4 x + 6 y = negative 20.
one
two
an infinite number
no solution
Answer:
No solution
Step-by-step explanation:
The equations:
2x – 3y = 10 → equ(1)
–4x + 6y = 20 → equ(2)
Using elimination method, and solving with y, we have:
3( –4x + 6y = 20) → equ(3)
6( 2x – 3y = 10) → equ(4)
Opening the bracket, we have:
–12x + 18y = 60
+12x – 18y = 60
From the above, we can see that both x and y are now eliminated, thereby giving us: 0 = 120 which makes no sense to me as it looks incorrect.
Therefore, there is no solution to the given equation.
I hope this helps
Answer:
One
Step-by-step explanation:
Jeri finds a pile of money with at least $200. If she puts $80 of the pile in her left pocket, gives away 1/3 of the rest of the pile, and then puts the rest in her right pocket, she'll have more money than if she instead gave away $200 of the original pile and kept the rest. What are the possible values of the number of dollars in the original pile of money? (Give your answer as an interval.)
The possible values of the number of dollars in the original pile of money is on the interval (200, 440)
How to solve Inequality Word Problems?We are told that Jeri finds a pile of money with at least $200.
Now, let x be the additional amount over the original amount of $200.
The greater side of the inequality will be expressed as;
Original pile = (200 + x)
After she gives away $80 and as such she has; (120 + x)
And she gives (1/3) of this away which means she will have;
= (1/3) (120 + x)
Thus, she must have (2/3) of this left
= (2/3)(120 + x) = amount in her right pocket
The lesser side of the inequality is expressed as;
(x + 200) - 200 = x
Thus, we now have that;
2[120 + x ]/3 > x
240 + 2x > 3x
240 > 3x - 2x
240 > x
x < 240
Thus, we can conclude that the original amount could be on the interval (200, 440)
The possible values of the number of dollars in the original pile of money is on the interval (200, 440)
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Help me please 10 pts for you mark you brainliest
Answer 1: A and C
Step-by-step explanation:
Use distribution law to see which answer match the equation at the top.
Answer 2: 16q + 4
10q and 6q are like terms
10q + 6q = 16q
+
5 - 1
Answer:
Hello,
Step-by-step explanation:
page 1:
60-36j=12(5-3j) answer C
=6(10-6j) answer A
page 2:
10q+5+6q-1=16q+4=4(4q+1)
page 3:
24j-16=8(3j-2)
page 4:
10h+30+50j=10*(h+3+5j) answer B
=2*(5h+15+25j) answer C
=5(2h+6+10j) not A nor D
What are the missing side lengths for the triangle?
Answer:
[tex]BC=5\sqrt{2}[/tex], [tex]AC=5\sqrt{4}[/tex]
Step-by-step explanation:
In a 45-45-90 relation triangle the two shortest sides will have equal length, meaning:
[tex]BC=5\sqrt{2}[/tex]
To find the hypotenuse we must multiply the shortest side by [tex]\sqrt{2}[/tex], both sides are equal so it doesn't matter which we multiply.
[tex]AC=5\sqrt{2} \sqrt{2} \\AC=5\sqrt{4}[/tex]
Starting at its rightmost position, it takes 1 second for the pendulum of a grandfather clock to swing a horizontal distance of 12 inches from right to left, and 1 second for the pendulum to swing back from left to right. Write a cosine function, d
The cosine function, d = acos(bt), to model the distance, d, of the pendulum from the center (in inches) as a function of time t (in seconds) is d(t) = 6cos([tex]\pi[/tex]t).
What is the principle of pendulum?As long as its length is constant, a pendulum completes each swing (or oscillation) in precisely the same amount of time. Any particular pendulum oscillates for a fixed amount of time.
Calculation for the cosine function-
The given function is: cosine function, d = acos(bt).
As, the pendulum takes 1 second for the pendulum of a grandfather clock to swing a horizontal distance of 12 inches from right to left, and 1 second for the pendulum to swing back from left to right.
The total time 't' by the pendulum is 2 sec.
Calculate the angular speed of the pendulum by-
ω = 2[tex]\pi[/tex]f
= 2[tex]\pi[/tex]×(1/2)
ω = [tex]\pi[/tex] which is 'b' value of the given function.
As given, the distance of the pendulum from the centre is half of the total distance.
a = 12/2
a = 6
Substitute the obtained values in the cosine function, d = acos(bt),
d(t) = 6cos([tex]\pi[/tex]t)
Therefore, the cosine function, d = acos(bt), to model the distance, d, of the pendulum from the center (in inches) as a function of time t (in seconds) is d(t) = 6cos([tex]\pi[/tex]t).
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The complete question is -
Starting at its rightmost position, it takes 1 second for the pendulum of a grandfather clock to swing a horizontal distance of 12 inches from right to left, and 1 second for the pendulum to swing back from left to right. Write a cosine function, d = acos(bt), to model the distance, d, of the pendulum from the center (in inches) as a function of time t (in seconds).
Answer:
a=6
The period is 2 seconds.
b=pi
t=0.5
d=4.243
Step-by-step explanation:
If point E is the midpoint of and point D is the midpoint of , which expression represents the value of s
The length of ED is half the length of AB.
What is the length?Distance is measured by length. Length is a quantity with the dimension distance in the International System of Quantities. Most measurement systems use a base unit for length from which all other units are derived. The meter is the foundation unit of length in the International System of Units.Reasons:
The given parameters are;
In ΔABC, point E is the midpoint of AC
The midpoint of BC is the point D
Segment ED = s
Segment CE = p
Segment EA = r
Segment CD = q
Segment DB = t
Segment ED = s
Segment AB = u
Required:
The expression that represents the value of [tex]s[/tex].
Solution:
CE = 0.5 × AC Definition of midpoint
CD = 0.5 × CB Definition of midpoint
Therefore, we have;
[tex]\frac{CE}{AC} =\frac{CD}{CB} =0.5[/tex]
Therefore, given that ∠C ≅ ∠C, by the reflexive property, we have;
ΔABC is similar to ΔCDE by Side-Angle-Side similarity
Which gives;
[tex]\frac{CE}{AC} = \frac{CD}{CB} = \frac{ED}{AB} =0.5=\frac{1}{2}[/tex]
ED = s and AB = u which gives;
[tex]\frac{ED}{AB}=\frac{s}{u} =0.5=\frac{1}{2}[/tex]
[tex]\frac{s}{u} =\frac{1}{2}[/tex]
Which gives:
[tex]s=\frac{1}{2} *u[/tex]
The expression that represents the value of s is; s = one-half u
Therefore, the length of ED is half the length of AB.
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The question you are looking for is here:
If point E is the midpoint of segment AC and point D is the midpoint of segment BC, which expression represents the value of s? triangle CAB, point E is on segment AC between points A and C and point D is on segment BC between points B and C, creating segment ED, CE equals p, EA equals r, CD equals q, DB equals t, ED equals s, and AB equals u s equals p over q s = one half s equals q over p s = 2u
Can someone help me
Answer:
1. y = 0
2. f(x) has a horizontal asymptote at y=3/2
I hope this helps and that you can give a brainliest!
Step-by-step explanation:
There is a horizontal asymptote at y = 0 because the degree of the x value in the denominator is greater than the degree of the numerator (since it doesn't exist in the numerator, it counts as 0).
The second question does not have a slant asymptote.
The degree of both numerator and denominator are equal, so the horizontal asymptote is the quotient of the leading coefficients. So, it's 3 divided by 2.
which of the following can be used to support the idea that the set of polynomials is closed under multiplication?
A) (5x-1)(3x^2+4x)
B) (9x^-3-5)(2x-17)
C) (10x^0.5)(5x^0.5+4)
D) (2x^-1-5x^4)(7x-2^-5)
The polynomial which can be used to support the idea that the set of polynomials is closed under multiplication is: A. (5x - 1)(3x² + 4x).
What is a polynomial?A polynomial can be defined as a mathematical expression which comprises intermediates (variables), constants, and whole number exponents with different numerical value, that are typically combined by using mathematical operations such as:
AdditionSubtractionMultiplicationIn Mathematics, a set is considered as closed under a multiplication operation, if the multiplication performed on two (2) elements of the set produces an element of the same set.
Note: The exponents of the variables are added when multiplying polynomials in accordance to the rules of exponents.
For option A, we have:
P = (5x - 1)(3x² + 4x)
P = 15x³ - 3x² + 20x² - 4x
P = 15x³ - 23x² - 4x.
For option B, we have:
P = (9x⁻³ - 5)(3x - 17)
P = 27x⁻² - 15x - 153x⁻³ + 85.
In conclusion, we can infer and logically deduce that the polynomial (5x - 1)(3x² + 4x) can be used to support the idea that the set of polynomials is closed under multiplication.
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Help me please
6. Find the LCM of 22a³b³c4 and 55abc.
O 110abc
O 77a³b³c¹
O 110a³b³c4
O 11a³b³c4
Which statement is the most appropriate comparison of the spreads?
Option D. The most appropriate comparison for the spread is that the interquartile range for town A, 15 degrees is less than that of B.
How to solve for the interquartile rangeThe inter quartile is solved as Q3 - Q1
This is seen as
For Town A,
30 - 15 = 15 degrees
For town B
40 - 20 = 20 degrees.
Hence we can see that 15 is less than 20, so town A is less than town B. The answer is option D.
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What is the factored form of 27 - 530?
(2 - 10 ) ( - 590) (9 - 510)
( 20 + 1820م + 18 ) ( 10 - 2) -
O
O
0
(2 - 10) ( 9 + 9 10 + 510)
(2 - 10 ) ( 18 + 2 510 + 20 )
Line ab passes through points a(-6,6) and b(12,3). if the equation of the line is written in slope-intercept form, y=mx+b, then m= -1/6. what is the value of b?
Answer: 5
Step-by-step explanation:
We have the equation of the line is of the form [tex]y=-\frac{1}{6}x+b[/tex].
Substituting in the coordinates (12,3), we get that:
[tex]3=-\frac{1}{6}(12)+b\\\\3=-2+b\\\\b=5[/tex]
There is a number that if you subtract 9 from it first, and then divide that total by 6, you get 7. What's the number?
Answer:
51
Step-by-step explanation:
Translate the problem into an equation and solve the equation.
(x - 9)/6 = 7
x - 9 = 42
x = 51
Answer: 51
Answer:
51
Step-by-step explanation:
Create an equation.
[tex]\frac{(x-9)}{6} = 7[/tex]
Multiply 6 to both sides.
x-9 = 42
Add 9 to both sides.
x=51
To check if this is correct follow the steps given in the question.
51-9=42
42÷6=7
It is correct.
Hope this helps!
A)x=45
B)x=90
C)x=20
D)x=4.5
Answer:
x=4.5
Step-by-step explanation:
We know that if all sides are congruent then all angles must also be congruent, therefore you can solve for x with the following equation:
[tex]20x=90[/tex]
Solve
[tex]x=4.5[/tex]
A kite is made up of two isosceles triangles, KIT and KET, with the lengths shown. The top triangle of the kite, ΔKIT, is made from approximately 17 square inches of material.
Isosceles triangles K I T and K E T are connected at side K T. The length of K T is 10 inches. The length of sides K E and E T are 8 inches. The lengths of sides K I and I T are 6 inches.
Heron’s formula: Area = StartRoot s (s minus a) (s minus b) (s minus c) EndRoot
How much material is used for the entire kite, quadrilateral KITE? Round to the nearest square inch.
31 square inches
34 square inches
48 square inches
62 square inches
The amount of material needed for the entire kite is 48 square inches
How to determine the amount of material?The given parameters:
KI =6 inches
ET = 8 inches
KT=10 inches
Area of ΔKIT = 17 square inches
Start by calculating the area of the bottom triangle using:
A = 0.5 * Base * Height
This gives
A = 0.5 * 10 * 6
Evaluate
A = 30
The amount of material is
A = 30 + 17
A = 47
Hence, 48 square inches of material is used for the entire kite, quadrilateral KITE
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Which of the following is an arithmetic sequence where a₁ = 9 and d= 7?
A) 9, 16, 23, 30, 37, ...
B) 0, 9, 18, 27, 36,...
C) 7, 16, 25, 34, 43,...
D) 0, 7, 14, 21, 28, ...
Answer:
Option A
Step-by-step explanation:
Arithmetic sequence:In a arithmetic sequence, difference between any two consecutive term is constant.
a₁ = 9 & d = 7
t₁ = 9
t₂ = a₁ + d
= 9 + 7
= 16
t₃ = t₂ + d = 16+ 7
= 23
t₄ = t₃ + d
= 23 + 7
= 30
t₅ = t₄ + d
= 30 + 7
= 37
9,16,23,30,37,.......
If joe travels 434 miles in 7 hours, how far will he travel in 10 hours at the same speed?
He travels 620miles at the same speed.
Given that joe travels 434 miles in 7 hours.
An object's speed is determined by how quickly it moves. It is the distance a body travels in one unit of time.
Firstly, we will find the speed when the distance is 434 miles and the time is 7 hours by using the formula
Speed=Distance/Time
Substitute the values in the formula, we get
Speed=434miles/7 hours
Speed=62 miles/hour
Now, we will find the distance when time is 10 hours, we get
62=distance/10
Multiply both sides by 10, and we get
62×10=(distance/10)×10
620miles=distance.
Hence, in 10 hours at the same speed, he travels when joe travels 434 miles in 7 hours is 620miles.
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Find the surface area of the prism. Round to the nearest tenth if necessary.
Answer:
480
Step-by-step explanation:
First, lets solve for the area of the 3 rectangles in the prism
One can be found by doing 17*9. The other, 8*9, the last 15*9
Next, lets solve for the 2 triangles. This is found with...
1/2(8)(15). This turns out to be 60, and we multiply that by 2 since there are 2 of those triangles.
Add everything up:
72+153+135+120 = 480
The probability of correctly rejecting the null hypothesis when the null hypothesis is false is the _____.
The probability of correctly rejecting the null hypothesis when the null hypothesis is false is the power
How to complete statement?From the question, we have the following highlights
Null hypothesis is falseNull hypothesis is correctly rejectedThe statement that represents the probability of the above highlights is power
Hence, the statement that completes the blank is power
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Which of the following is equivalent to 5 squareroot of 13 3
The exponential form of ⁵√13³ is [tex]13^{3/5}[/tex].
Hence, option D) is the correct answer.
This question is incomplete, the complete question is:
Which of the following is equivalent to 5 sqrt 13³ ?.
A) 13^2.
B)13^15.
C)13^(5/3).
D)13^(3/5)
What is equivalent to 5 sqrt 13³ ?Given the expression; 5 sqrt 13³
This can be represented as; ⁵√13³
To convert from radical form to exponential form, we use apply the radical rule;
[tex]\sqrt[n]{a^m} = a^{m/n}[/tex]
Hence,
[tex]\sqrt[5]{13^3} = 13^{3/5}[/tex]
The exponential form of ⁵√13³ is [tex]13^{3/5}[/tex].
Hence, option D) is the correct answer.
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Find the area of the figure
Answer:
100
Step-by-step explanation:
Lets first find the area of the greater square:
[tex]8*14=112[/tex]
And now the area of the cut inside of the square:
[tex]3*4=12[/tex]
Now subtract the area cut from the area of the greater square:
[tex]112-12=100[/tex]
What is the slope of the line represented by the values in the table?
X
10
2
3
7
20
O-2
7-7
12
02
y
14
-2
0
8
34
Answer: 2
Step-by-step explanation:
[tex]\frac{-2-14}{2-10}=\frac{-16}{-8}=\boxed{2}[/tex]
1. The perimeter of a rectangle is 16cm, and the area of the same rectangle is 8cm^2. What is the diagonal length of the rectangle?
2. Kendrick rides his bike x miles per hour to school and it takes him x + 15 minutes to get there. If Kendrick lives 5.4 miles from school, how many minutes does it take for Kendrick to ride to school?
Answer:
Step-by-step explanation:
Arnold paid R2 599,99 for a car sound system in 1997 Assuming an average inflation rate of 7% per annum what did he pay for a sound system with the equivalent value in 2014
The value of the car in 2014 is 154709
How to determine the value?The given parameters are:
Initial, a = 599,99
Rate, r = 7%
The value of the car in t years is
Value = a * (1 + r)^t
This gives
Value = 59999 * (1 + 7%)^t
2014 is 17 years from 1997.
So, we have:
Value = 59999 * (1 + 7%)^14
Evaluate
Value = 154709
Hence, the value of the car in 2014 is 154709
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What are the ratios for sin A and cos A? The diagram is not drawn to scale.
Answer:
C
Step-by-step explanation:
Sin represents opposite/hypotenuse. Thus, when A is the reference angle, 21 is the measure of the opposite side (CB) and 29 is the measure of the hypotenuse (AB).
Cos represents adjacent/hypotenuse. Therefore, when A is the reference angle, 20 is the measure of the adjacent side (AC) and 29 is the measure of the hypotenuse (AB).
A 2-column table with 3 rows. Column 1 is labeled x with entries 2, 4, 5. Column 2 is labeled y with entries 5, 10, 12.5.
Use the information in the table to find the constant of proportionality and write the equation.
The constant of proportionality is
.
The equation that represents this proportional relationship is
.
The equation of constant of proportionality will be y = 2.5x.
Given A 2-column table with 3 rows. Column 1 has entries 2, 4, 5. Column 2 has entries 5, 10, 12.5.
Equation of two variables look like ax+by=c. It can be a linear equation,quadratic equation,cubic equation.
Equation from two points can be found out by putting the values of points in the formula given below:
[tex](y-y_{1})=(y_{2} -y_{1} /x_{2} -x_{1} )*(x-x_{1} )[/tex] in which [tex](x_{1} ,y_{1} ),(x_{2} ,y_{2} )[/tex] are the end points of the line.
Equation of constant proportionality looks like:
k=y/x
in which k is slope which is to be find out according to the same formula as we find in the equation of line.
Slope from (2,5),(4,10) is (10-5/4-2)
=5/2
=2.5
Put the value of k=2.5 in formula of slope.
2.5=y/x
2.5x=y
y=2.5x.
Hence the equation of constant of proportionality is y=2.5x.
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Which ordered pair is a solution to the system of linear equations? 2x 3y= 6 –3x 5y = 10
The given system of equations has the solution, x = 0, and y = 2, giving the ordered pair (0, 2). Hence, the first option is the right choice.
In the question, we are asked for the ordered pair, which is the solution to the system of equations:
2x + 3y= 6 ... (i)
–3x + 5y = 10 ... (ii).
To solve for the solution to the system of equations, we use the elimination method.
We multiply (i) by 3, and (ii) by 2, and then add the resultant equations to eliminate x as follows:
6x + 9y = 18 {(i) * 3}
-6x + 10y = 20 {(ii) * 2}
_____________
19y = 38,
or, y = 38/19 = 2.
Substituting, y = 2, in (i), we get:
2x + 3y = 6,
or, 2x + 3(2) = 6,
or, 2x + 6 = 6,
or, 2x = 6 - 6 = 0,
or, x = 0/2 = 0.
Thus, the given system of equations has the solution, x = 0, and y = 2, giving the ordered pair (0, 2). Hence, the first option is the right choice.
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The complete question is:
"Which ordered pair is a solution to the system of linear equations?
2x + 3y= 6
–3x + 5y = 10
(0,2)
(2,0)
(3,2)
(2,3)"
Complete the following conversions. i) 1 mm = m ii) mm = 1 m iii) 1 cm = m iv) cm = 1 m v) 1 km = m vi) km = 1 m vii) 1 cm = mm viii) cm = 1 mm
The unit conversion for the given values are explained below.
What is unit conversion?Unit conversion is the process of changing a quantity's measurement between different units, frequently using multiplicative conversion factors.
The following measurements: length, weight, capacity, temperature, and speed are all measured in units.
Some basic unit conversions are-
1 Km = 1000 m1 m = 100 cm1 m = 1000 mm1 cm = 10 mmThere are two methods to convert the units
To convert smaller unit into larger divide the number by conversion factor.To convert larger value into smaller value multiply by the conversion factor.The unit conversion for the following factors are-
i) 1 mm = _ m
Here, conversion is from smaller to larger. So, divide by conversion factor.
1 mm = (1/100)m
ii) _ mm = 1 m
Here, conversion is from larger to smaller. So, multiply with conversion factor.
1000 mm = 1 m
iii) 1 cm = _ m
Here, conversion is from smaller to larger. So, divide by conversion factor.
1 cm = (1/100)m
iv) _ cm = 1 m
Here, conversion is from larger to smaller. So, multiply with conversion factor.
100 cm = 1 m
v) 1 km = _m
Here, conversion is from larger to smaller. So, multiply with conversion factor.
1 km = 1000 m.
vi) _ km = 1 m
Here, conversion is from smaller to larger. So, divide by conversion factor.
(1/1000) km = 1 m.
vii) 1 cm = _mm
Here, conversion is from larger to smaller. So, multiply with conversion factor.
1 cm = 10 mm
viii) _cm = 1 mm
Here, conversion is from smaller to larger. So, divide by conversion factor.
(1/10) cm = 1 mm.
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FIRST PERSON TO ANSWER GETS BRAINLIEST OR FIVE STARS Define the domain and range of the function.
Domain:
Range:
Answer:
Domain: (-∞, ∞)
Range: (-∞, ∞)
Step-by-step explanation:
The domain are the x-values included in the function (the horizontal axis).
The range are the y-values included in the function (the vertical axis).
The two arrows on the ends of the line (pointing upwards and downwards respectively) indicate that the function goes in those direction for infinity. Therefore, if there are an infinite amount of y-values, the range is (-∞, ∞).
While the slope is quite steep, there is still a slope and slowly "expands" the line on the horizontal axis. Because there is no limit to the y-values, the domain will also expand infinitely. Therefore, the domain is also (-∞, ∞).
Answer:
Domain: All real numbers (interval notation: [tex](-[/tex]∞, ∞[tex])[/tex]
Range: All real numbers (interval notation: [tex](-[/tex]∞, ∞[tex])[/tex].
Step-by-step explanation: The domain of a graph is all the x-values where the line touches or will eventually touch.
The range of a graph is like the domain, but it is all the y-values where the line touches or will touch.
In a linear function in the form y = mx + b or ax + by = c, the domain and range will always be "all real numbers" and the interval will always be (-∞, ∞). This makes sense since a line always goes on forever (unless it's piecewise or an inequality.) So the line will eventually meet every single x and y value on the xy graph.