Ratio Tables and Proportional Relationships

Check all the ratios that are proportional.

The constant of proportionality in the equation y = ½x is _______. 

• x

• y

• 1/2

• 2

Which situation BEST represents a proportional relationship?

• Sam sold 2 bracelets for $3 and 3 bracelets for $5.

• Jimmy ran 3 miles in 30 minutes and 5 miles in 45 minutes. 

• Larry packed 27 glasses in 9 cases and 45 glasses in 15 cases. 

•  Finn placed 8 markers in 2 boxes and 16 markers in 8 boxes. 

Do these ratios form a proportion?

• Yes, they form a proportion.

• No, they do not form a proportion.

Does the table represent a proportional relationship?

• Yes.

• No.

Does the table represent a proportional relationship?

• Yes.

• No.

Determine if the ratios are proportional.
4/5 and 15/20

• Yes

• No

Which of the following tables are proportional? (You may select more than one!)

• 
• 
• 

• Proportional

• Nonproportional

• Proportional

• Nonproportional