7th Grade Math Review: Proportionality

Front

A rocket travels at a rate of 160 meters in 3 seconds. What is the speed of the rocket in meters per second?

Back

53 1/3 m/sec

Front

The table shows the number of times a grasshopper chirped in a given time period.

Which of the following best describes the constant of proportionality?

• The grasshopper chirps 45 times in 1/2 a minute
• The grasshopper chirps 90 times in 1 minute.
• The grasshopper chirps 22.5 times in 1 minute.
• The grasshopper chirps 135 times in 1.5 minutes.

Back

The grasshopper chirps 90 times in 1 minute.

Front

The graph shows the number of calories in a given number of donuts.

Which of the following best describes the constant of proportionality?

• 100 calories per donut
• 300 calories per donut
• 150 calories per donut
• 600 calories per donut

Back

150 calories per donut

Front

Ta'mya ran 4/5 of a mile in 1/8 of an hour. What is Ta'mya's constant rate of proportionality in miles per hour?

Back

6.4 mph

Front

The table shows the salary Yuridia earned working at her new job. How much does Yuridia earn per hour?

$10.25

,

$11.50

,

$12.75

,

$14.50

Back

$12.75

Front

A company is trying to decide which container of coffee to buy for a staff meeting. Which of the following would be the best deal?

Options:

48 ounces for $5.00

,

32 ounces for $4.00

,

60 ounces for $6.75

,

45 ounces for $4.50

Back

48 ounces for $5.00

Front

The price of candy at The Baker Shop can be determined by the equation p=2.95n, where p is the price and n is the number of pounds of candy. What is the constant of proportionality?

Back

$2.95 / pound

Front

Treyvion rides his bike 9 miles in 50 minutes. What is Treyvion's speed in miles per hour?

Back

10.8 mph

Front

Which graph represents a proportional relationship?

Back

Front

Which table represents a proportional relationship between x and y?

Back