Ratio and Proportions Review

Which of the following are equivalent to 5:4

• 25:20

• 10:12

• 15:12

• 10:8

What is the constant of proportionality?

• 8

• 2

• 3

Which graph shows a direct proportion?

• 
• 
• 
• 

What equation is shown for this graph?

• y = 25x

• y = 225x

• y = 50x

• y = 0.02x

Write an equation for the relationship between x and y.

• y = 4x

• y = 1/4x

• y = 4

• y = 1/4

Write an equation for the relationship between x and y.

• y = 2

• y = 1/2

• y = 2x

• y = 1/2x

Determine the missing value in the table.

• 15

• 3

• 1/3

• 9

The values of y/x are proportional. Find the missing values. (in order from left to right)

• 5, 8, 12

• 100, 160, 240

• 9,24, 44

Two slices of Dan’s Famous Pizza have 300

Calories. How many Calories would you expect to be in 6 slices of the same pizza?

• 30 calories

• 900 calories

• 1200 calories

• 460 calories

A shop produces 39 wetsuits every 2 weeks.  How long will it take the shop to produce 429 wetsuits?

• 18 wk

• 20 wk

• 22 wk

• 24 wk