Directly and Inversely Proportional Relationships

Match the correct equation to the graph

• y = 4x

• y = 9x

• y = 10x

• y = 3x

Tom is sorting cookies with his little sister Betty. He notices when he takes a cookie, she take 3. When he takes 2, she takes 6. And so on. What type of relationship is there between their cookie taking behaviors?

• non-proportional

• semi-porportional

• directly proortional

• inversely proportional

A 12-ounce bottle of shampoo lasts Enrique 16 weeks. How long would you expect an 18-ounce bottle of the same brand to last him?

• 24 Weeks

• 24-ounce bottle

• 10.6 Weeks

• 10.6-ounce bottle

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

• y

• x

• 14

Jane is painting her room. She mixes 3 pints of blue paint with 4 pints of red paint to get her desired color. Which equation can be used to find the number of pints of blue paint (x) Jane should mix with 16 pints of red paint?

• 3/x=16/4

• 3/4=x/16

• 3/16=4/x

• x/16=4/3

Solve the Proportion:
X/9 = 9/27

• 9

• 3

• 81

• 245

Solve the Proportion:
11/10 = 22/X

• 20

• 220

• 242

• 2

Is this table proportional or non-proportional?

• Proportional

• Non-Proportional

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

• Proportional

• Not Proportional

• y = 1/5x

• y = 5x

• y = 1/2x