Proportional and Non Proportional Linear Relationship

Which best describes the equation?
y = 75x

• Proportional

• Nonproportional

Why does this graph show a non-proportional relationship?

• Because it is proportional

• It goes through the origin

• It does not go through the origin

• It is a straight line

Is the graph proportional?

• Yes

• No

Why does this graph show a non-proportional relationship?

• Because it is proportional

• It goes through the origin

• It does not go through the origin

• It is a straight line

Does the equation show a proportional relationship?

• Yes

• No

Which of the equations below is proportional?

• y = 6x

• y = 3x + 2

• y = 2x + 4

• y = -2x -1

Select all graphs that represent a proportional relationship.

• 
• 

Select all equations that represent a proportional relationship.

• 
• 

These two lines are graphs of nonproportional relationships. What makes them nonproportional?

• They are not straight

• They are not linear

• They do not go through the origin

• They do not show a constant rate of change

Which graph is non-proportional?

• A

• B

• C

• D