Proportional Relationships Study guide

The equation y = 5.5x represents a proportional relationship. What is the constant of proportionality?

• x

• y

• 5.5

• 1/5.5

Tags

CCSS.7.RP.A.2B

Are the number of white and yellow flowers in Cara's arrangements proportional? Which equation relates the number of white flowers, w to the number of yellow flowers, y?

• Yes; y = 3/5w

• Yes; y =5/3w

• No; y = 3w + 5w

• No; y = 5 + 3w

Tags

CCSS.7.RP.A.2C

Are the numbers of white and yellow flowers in Hector's arrangements proportional? Which equation relates the number of white flowers, h, to yellow flowers, e?

• Yes; e = 3\2h

• Yes; e = 2\3h

• No; e = h + 2

• No; e = h - 2

Tags

CCSS.7.RP.A.2C

Which of the following ordered pairs are on the graph? What does it represent in this situation?

• (45, 90); the machine caps 45 bottles in 90 seconds.

• (45, 900); the machine caps 45 bottles in 900 seconds.

• (45, 900); the machine caps 900 bottles in 45 seconds.

• (900, 45); the machine caps 900 bottles in 45 seconds.

Tags

CCSS.7.RP.A.2D

Natalie walks 3\5 mile in 1\2 hour. How fast did she walk, in miles per hour?

• 3\10 miles per hour

• 5\6 miles per hour

• 1 1\5 miles per hour

• 2 miles per hour

Tags

CCSS.7.RP.A.1

Sarah used 2.5 cups of cheese in a dish that serves 10 people. Amyn used 1.6 cups of cheese in a dish that serves 8 people. How much more cheese is in one serving of Sarah's dish?

• 0.5 cup

• 0.25 cup

• 0.2 cup

• 0.05 cup

Tags

CCSS.7.EE.B.3

A garden hose fills a 2-gallon bucket in 5 seconds. The number of gallons, g, is proportional to the number of seconds, t, that the water is running. Select all the equations that represent the relationship between g and t.

• g = 0.4t

• t = 0.4g

• g = 2.5t

• t = 2.5g

• g = (2/5)t

Tags

CCSS.7.RP.A.2C

Look at the graph you chose in Part A. Do the number of cookies and the cost have a proportional relationship? The graph is a straight line through the:

• Yes

• is not

• No

• is

• origin

Tags

CCSS.7.RP.A.2D

What does the point (1, 0.75) represent in this situation? What does the point (0,0) represent?

• 1 cookie costs $0.75; no cookies cost $0.

• 1 cookie costs $7.50; no cookies cost $0.

• 0.75 dozen cookies cost $1; 0 dozen cookies cost $0.

• 1 dozen cookies cost $0.75; 0 dozen cookies cost $0.

Tags

CCSS.7.RP.A.2B

• 1125

• 500

• 750

• 2315

• 565

Tags

CCSS.7.RP.A.2C