Directly and Proportional Graphs and Equations

Is the graph proportional or non proportional?

• proportional

• non proportional

Is the graph proportional or non proportional?

• proportional

• non proportional

Which graph is non-proportional?

• A

• B

• C

• D

Is this table proportional or non-proportional?

• Proportional

• Non-Proportional

What is the constant of proportionality?

• 8

• 16

• 24

• 2

Craig earns extra money as a lifeguard. He earns $37 for 4 hours and $64.75 for 7 hours.  What is the constant of proportionality? 

• $37

• $64.75

• $9.25

• $18.50

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

• Proportional

• Not Proportional

Does this equation represent a proportional relationship?

• Yes

• No

Which linear equations are proportional? (There is more than one correct answer.)

Suppose y varies directly as x. If x = 27 when y = 6, find x when y = 2.

• 0.44

• 81

• 23

• 9