Proportional Relationship Unit Review 2

Which situation is best described by the graph shown?

• JJ purchases chips for $0.75 per bag.

• Mark buys a pack of gum for $1.50 each.

• Paula pays $0.50 per ticket at the fair.

• Franco purchases flowers for $3.00 each.

Find the constant of proportionality in the graph.

• 9

• 4.5

• 3

• 1.5

Jeremy can row 3/8 of a mile in 1/4 of an hour. What is the unit rate that describes the miles per hour?

• 1 1/2 miles per hour

• 3/4 miles per hour

• 1 1/2 hours per mile

A bag of popcorn contains 483 calories and serves 3.5 people. How many calories are in each serving?

An app developer projects that he will earn $230.00 for every 100 apps downloaded. Which of the following equations can be used to represent the proportional relationship between the number apps, x, and the total earnings, y.

• y=100x+230

• y=230x+100

• x=2.30y

• y=2.30x

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 relationship between the amount of money in Sarah's savings account over a period of time. Which of the following statements is NOT true about the relationship?

• After 5 weeks, Sarah has $100 in her account.

• If Sarah has a balance of $60, then 7 weeks have passed.

• The relationship is proportional.

The table shows the relationship between the number of miles traveled, x, and the number of gallons of gas used, y. Which of the following equations best represents the relationship?

• $y=\frac{1}{35}x$

• y=35x

• 35=1x

• y=3.5x

The graph shows the amount of money that Terrance saves each week from his lawn mowing job. Which best represents the unit rate?

• (0, 0)

• (1, 200)

• (200, 1)

• (2, 200)

Which of the following does NOT represent the number of months in a year?

• A

• B

• C

• D