Table to Equations and Graphs

What is the rate of change for the following graph?

• 80

• 20

• 40

• 160

Which graph shows a proportional relationship between x and y?

• F

• G

• H

• J

Which line shows a proportional relationship between x and y?

• Line L

• Line M

Jacob’s parents have allowed him to get a cell phone but he must pay his own cell phone bill. He pays a flat rate of $35 a month and 50¢ for every minute he talks on the phone. If c represents the total cost of the bill and m represents minutes talking on the phone, which equation best fits the situation?

• c = 5m + 35

• c = 3.5m + 50

• c = 0.5m + 35

• c = 35 + 100 + 0.5

On a multiplication facts test Samantha had to know the facts from 1-12. She earned 3 points for every fact she solved correctly and used a 10 extra points ticket that she previously received from her teacher. Which equation can be used to find p, the total number of points Samantha earned for solving f facts correctly?

• p = f (12 - 3)

• p = 3f + 10

• p = 3 (12 - f)

• p = 10 + f

Does this graph show a proportional relationship?

• Yes, because it is linear

• Yes, because it is linear and goes through the origin.

• No, because it is not linear

• No, because it does not go through the origin.

Which of the following equations does NOT match the table?

• y = 25/2x

• y = 2/25x

• y = 12.5x

• y = 12.5x + 0

Which of these terms is NOT used to describe the "m" in the equation y=mx+b.

• Constant rate of change

• starting point

• unit rate

• Constant of proportionality

Find the constant rate of change.

• 1/2

• -1/2

• 2

• -2

Billy opened a bank account with $200, and every week he spends $15.

Which equation best represents this situation?

• y = -15x + 200

• y = 15x - 200

• y = 200x + 15

• y = 15x + 200