Topic 2 Assessment Practice

The equation y = 7.6x represents a proportional relationship. What is the constant of proportionality?

• 7.6

• x

• y

Tags

CCSS.7.RP.A.2B

The graph shows how many sheets of paper a paper-folding machine can fold in a certain number of minutes. What is its constant of proportionality?

*Only write the number (sheets per minute).

Tags

CCSS.7.RP.A.2B

The graph shows how many sheets of paper a paper-folding machine can fold in a certain number of minutes. Which of the following is an ordered pair on the graph? What does it represent in this situation?

• (40, 600); The machine folds 40 sheets in 600 minutes.

• (40, 6000); The machine folds 40 sheets in 6000 minutes.

• (40, 6000); The machine folds 6000 sheets in 40 minutes.

• (6000, 40); The machine folds 40 sheets in 6000 minutes.

Tags

CCSS.7.RP.A.2D

• 4 miles per hour.

Tags

CCSS.7.RP.A.1

The water pump for a swimming pool can move 166.5 gallons of water in 3 minutes. The number of gallons, g, is proportional to the number of minutes, m, that the pump operates. Which of the following equations DOES NOT represent the relationship between g and m?

• g = 55.5m

• g = 0.02m

Tags

CCSS.7.RP.A.2C

Tags

CCSS.7.RP.A.1

At the local bookstore, Jim bought 2 paperback books for $13.00. Maria bought 5 paperback books for $32.50. Tanya bought 7 paperback books for $45.50. Which graph represents the situation?

• 
• 
• 
• 

Tags

CCSS.7.RP.A.2D

Using the graph from the previous question, do the number of books and the cost have a proportional relationship?

• Yes; the graph is a straight line through the origin.

• Yes; the graph is not a straight line through the origin.

• No; the graph is a straight line through the origin.

• No; the graph is not a straight line through the origin.

Tags

CCSS.7.RP.A.2D

What does the point (1, 6.50) represent in this situation? What does the point (0, 0) represent?

• 1 paperback book costs $6.50; no paperback books cost $0.

• 1 paperback book costs $0.65; no paperback books cost $0.

• 1 dozen paperback books cost $6.50; zero dozen paperback books cost $0.

• 1 dozen paperback books cost $0.65; zero dozen paperback books cost $0.

Tags

CCSS.7.RP.A.2D

Are the numbers of green and purple beads in Mia’s picture frames proportional? Write an equation that relates the number of purple beads, p, to the number of green beads, g.

• No; p = 7g + 2g

• No; p = 7 + 2g

Tags

CCSS.7.RP.A.2C