The points (2, 4) and (-2, -4) are plotted on the coordinate plane using the equation y = a × x. How can you use the coordinates to find the value of a?

Answer:

you can replace the y in the equation with 4 or -4 and the x with 2 or -2.

then make like all equations you want to get a by itself

right now the equation should look like 4= 2a

now you divide 4/2= 2a/2

now the equation looks like this 2=a or a=2

The value of a is 2.

Given that,

Based on the above information, the calculation is as follows:

Here we have to replace the y with 4 or -4 and the x with 2 or -2

So, it should be like

4= 2a

So, a = 2  

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Gia measures the mass of her football. She uses four 100g weights and two 10g weights to balance the scale. What is the mass of the football?


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How does the decimal point move when multiplying 79.816×103?

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Simplify the expression
(x+y)⁵ ÷ (x+y)²

11/3 × 5/8
A. 3/4
B. 4/5
C. 5/6
D. 5/8
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Use operations of decimal, fraction, and percent numbers to model the following scenarios. In your final answer, include only an equation or proportion modeling the scenario. Do not solve the problems.

A family dines in a popular franchise restaurant. At the end of the meal, they decide to leave their server a monetary tip that is equal to 20% of the total bill amount, $60.50. How much will the family leave their server as a tip?
A family dines in a popular franchise restaurant. They plan to use a coupon that will give them a discount of 15% off of their total dinner bill, not including applicable sales tax or their server’s tip. If the family’s dinner bill totaled $34.00 before tax and tip, how much money will they save by using the coupon?
A family dines in a popular franchise restaurant. They plan to use a coupon that will give them a discount of 10% off of their total dinner bill, not including applicable sales tax or their server’s tip. The bill totals $157.30 before tax and tip. What is the new total after the server applies the 10% off coupon?
A family of eight dines in a popular franchise restaurant. The restaurant has a policy of automatically including a standard tip to the final bill for parties larger than six people. The bill for the meal included a total of $58.25 in food and beverage sales, plus a standard tip of $10.49. What percent of the food and beverage sales does the restaurant consider to be a standard tip for parties larger than six?
A family dines in a popular franchise restaurant that has a policy of automatically including a 20% tip on all food and beverage sales before coupon discounts are applied. What is the family’s total bill amount if their food and beverages totaled $94.20 and they used a 15% off coupon? (HINT: Create more than one model.)

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Evaluate the expression when x=20 and y=4.

8y−x =

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Mr. McLean manages playgrounds for the 8 elementary schools in the Franklin School District. This year, he wants to put new sandboxes at each of the schools. He estimates that he will need 3 tons of sand for this project. How many 50-pound bags of sand should he order for each school?

2/5 divided by 1/4 as a fraction

I just need 1 more reason for the black text. Thanks!

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Write a story that could represent this math problem.

The equation four times three eighths. Below is four rectangles partitioned into eight equal parts. All the rectangles each have three parts shaded.

Based on the context in paragraph 4, fossil refers to _____.

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Write in slope intercept form
5x - 3y = -9
Group of answer choices

y = (5/3)x + 9

y = (5/3)x - 3

y = (3/5)x + 3

y = (5/3)x + 3

Between 3 and 5 seconds, the elevator was moving at a rate of

Liam is setting up folding chairs for a meeting. If he arranges the chairs in 4 rows of the same length, he has 5 chairs left over. If he arranges the chairs in 2 rows of that same length, he has 23 left over. How many chairs does Liam have?


Liam has ______chairs.

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The table below shows the data for a random sample of fish that were collected from and later released into a lake:

Type of Fish Catfish Grass Carp Bluegill
Number of Fish 52 61 87
How many bluegills are estimated to be present if a sample of 800 fish is collected from the lake? (5 points)

Group of answer choices

148

174

244

348

Solve the equation 3= d+2
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in this experiment, you will use a track and a toy car to explore the concept of movement. You will measure the time it takes the car to travel certain distances, and then complete some calculations. In the space below, write a scientific question that you will answer by doing this experiment.

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John’s house is 12 miles away from school. He is two-thirds of the way home. How many miles has he walked?
A. 8
B. 16
C. 18
D. 24

Which equation is parallel to:
y = -2x +2
Group of answer choices

y = 1/2x +7

y = -2x +5

y = -1/2x +3

y = 2x +6