Proportional Relationship Study Guide

Find the unit rate: $4.80 for 4 pounds of apples. How much does it cost for 1 pound of apples?

• $0.83 per pound

• $4.80 per pound

• $1.20 per pound

• $1.10 per pound

Which statement below accurately represents the graph?

• $100 is earned for each hour worked

• $200 earned for every 2 hours worked

  is the unit rate

• $62.50 is earned for every hour worked

• $300 is earned after working 4 hours

Which situation is best described by the graph shown?

• Brooklyn purchases Skittles for $0.75 per bag.

• Jessica buys Snickers bars for $1.50 each

• Pat pays $0.50 per ride at the fair.

• Fran purchases scrunchies for $3.00 each.

What is the equation?

• y = 1/4x

• y = 4x

• y = x + 4

• y = x - 4

Find the constant of proportionality in the graph below.

• 9

• 4.5

• 3

• 1.5

What is the constant of proportionality for the following graph?

• 80
• 20
• 40
• 160

A bag of puff corn contains 355 calories and serves 2.5 people. How many calories are in each serving?

• 14.2

• 7

• .007

• 142

An musician projects that he will earn $540.00 for every 150 songs downloaded. Which of the following equations can be used to represent the proportional relationship between the number of apps, x, and the total earnings, y.

• y = 150x + 540

• y = 540x + 150

• x = 3.60y

• y = 3.60x

Based on the information in the table, what is the constant of proportionality?

• k = 8

• k = 20

• k = 5

• k = 10

The graph shows the amount of money that Terrance saves each week from his lawn moving job. Which best represents the constant of proportionality?

• (0, 0)

• (1, 200)

• (200, 1)

• (2, 200)