7th Grade PARCC Practice: Proportions Based on Graphs

The graph shows the proportional relationship between the number of hours Batman has charged his Batplane and the number of hours he can fly. What does the x axis represent?

• How many hours the Batplane can fly

• How many hours the Batplane has been charged

• Impossible to know, much like Batman's real identity

The graph shows the proportional relationship between the number of hours Batman has charged his Batplane and the number of hours he can fly. What does the y axis represent?

• How many hours the Batplane can fly

• How many hours the Batplane has been charged

• Impossible to know, much like Batman's real identity

The graph shows the proportional relationship between the number of hours Batman has charged his Batplane, x, and the number of hours he can fly, y. What does the point (8,4) represent?

• If Batman charged the Batplane for 8 hours, he can fly for 4 hours.

• If Batman charged the Batplane for 4 hours, he can fly for 8 hours.

• Impossible to know, much like Batman's real identity

The graph shows the proportional relationship between the amount of water Shane puts in his water bottle and how long it takes to get that amount. What does the x axis represent?

• Amount of water in ounces

• How long it takes, measured in seconds

• Unknown

The graph shows the proportional relationship between the amount of water Shane puts in his water bottle and how long it takes to get that amount. What does the y axis represent?

• Amount of water in ounces

• How long it takes, measured in seconds

• Unknown

The graph shows the proportional relationship between the amount of water (in ounces) Shane puts in his water bottle, x, and how long (in seconds) it takes to get that amount, y. What does the point (2, 6) represent?

• To get 6 ounces of water in his bottle, it takes 2 seconds.

• To get 2 ounces of water in his bottle, it takes 6 seconds.

• To get 12 ounces of water in his bottle, it takes 12 seconds.

The graph shows that 25 pounds of potatoes costs...

• $5

• $10

• $15

• $20

The graph shows that $21 will buy _____ pounds of potatoes.

• 35

• 25

• 15

• 5

The graph shows the relationship between the number of pounds of potatoes (x) and the total cost of the potatoes (y).

Which statements about points on the graph of the relationship are correct? Select each correct statement.

• The point (1, 0.60) means that 1 pound of potatoes costs $0.60.

• The point (12, 7.20) means that 12 pounds of potatoes costs $7.20 per pound.

• The point (30, 18) means that 18 pounds of potatoes costs $30 per pound.

• The point (25, 15) means that 15 pounds of potatoes costs $25 per pound.

• The point (40, 24) means that 40 pounds of potatoes costs $24.00 per pound.