Comparing Proportional Relationships in Different Forms

Determine which equation does NOT represent a proportional relationship.

• y = -2x

• y = 1/2 x

• y = 3x

• y = 5x - 7

• Farmer's Market

• Grocery Store

• Plums cost the same amount at the farmer's market and the grocery store.

• Becky's Shower

• Rachel's Shower

• They use the same amount of water

Is this table proportional?

• Yes

• No

What is the unit rate?

• 80 miles in 1 hours

• 20 miles in 1 hours

• 40 miles in 1 hours

• 160 miles in 1 hours

Which company shows a greater rate of change?

• Water's Edge Rafts

• Ryan's Rafts

Which statement best describes the relationship between x and y in the table?

• Proportional

• Not Proportional

Which table shows a proportional relationship?

• A

• B

• C

• D

What is the Constant of Proportionality of the Table?

• 3

• 1/3

• 1/2

• 6

In the equation y = 14x, what is the constant of proportionality?

• y

• x

• 14

• y=14