Unit Rate and Proportions Review

What is the constant of proportionality for the equation and graph? (Remember: y over x)

y = 5/2x

• 2/5

• 5/2

• 0

• 1

Find the unit rate. Be sure to simplify your answers.

Terry runs 2 ¾ miles in ¾ of an hour.

• 1

• 44/12

• 11/3

• 3/11

Tags

CCSS.7.RP.A.1

Explain if the table above represents a proportional relationship (Remember to divide y over x).

• yes.

• yes because the ratio is the same, 5.

• no.

• no, the ratios are not the same because the first one is 5 and the second one is 4.5.

Tags

CCSS.7.RP.A.2A

Write and solve a proportion: Three posters cost $9.60. At that rate, how many posters can you buy for $48?

• 15

• 1.666666

• 153.60

What is the unit rate/constant for this table?

• 0.111111

• 9

• not proportional.

Does this graph represent a proportional relationship?

• Yes it goes through (0,0).

• No it is not a straight line.

Write an equation for the constant of proportionality.

• y = 5/20x

• y = 5x

• y = 4x