Proportions Review

The distance that an automobile travels varies directly as the time it travels. If the car travels 280 miles in 7 hours, how far will it travel in 12 hours?

• 480
• 1960
• 84
• 25

Tags

CCSS.7.RP.A.3

If there are 6 red cars sold to every 3 blue cars, is it the same proportion as 2 red cars to every 1 blue car? 

• Yes
• No

Tags

CCSS.7.RP.A.3

CCSS.7.RP.A.2

Find the Unit Rate of rotations per minute.
405 rotations in 5 minutes   

• 81 rotations per minute
• 73 rotations per minute
• 18 rotations per minute
• 810 rotations in 10 minutes

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

I paid $15.00 for 6 gallons of gasoline.
What was the price PER gallon?

• $0.40
• $9.00
• $2.50
• $0.90

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Solve for x

• x = 19.6

• x = 5/98

• x = 101/5

Tags

CCSS.7.RP.A.3

City Carpet advertises that they can install 1800 square feet in 2.5 hours. Which rate below is NOT equivalent?

• 1440 square feet in 2 hours

• 720 square feet in 1 hour

• 1080 square feet in 1.5 hours

• 240 square feet in 0.5 hour

Which of the following is NOT a way to determine whether a linear relationship is proportional?

• In a graph, the line passes through the origin and is a straight line.

• The equation is y = kx

• The equation is y = mx + b

• In a table the ratios are equivalent

What is the constant of proportionality?

• $40 per week

• $20 per week

• $10 per week

• $1/2 per week

Tags

CCSS.7.RP.A.2B

What is the equation?

• y = 20x

• 40 = 2x

• y = 40x

• y = kx

A painter can paint 140 square feet per hour. He charges $0.63 per square foot. Today she paints for 3.5 hours. How much will she charge?

• $308.70

• $154.35

• $490

• $88.20