Proportional Not Proportional Relationship

Does the table represent a proportional relationship?

• Yes.

• No.

What are the main characteristics of a proportional relationship between two variables?

• They pass through the origin.

• They are linear and also pass through the origin.

• They are curved

• They have a negative relationship and pass through the origin.

Does the table show a proportional relationship?

• Yes

• No

Which graph is proportional?

• A

• B

• C and D

• All of the graphs are proportional

Which of the equations below is proportional?

• y = 6x

• y = 3x + 2

• y = 2x + 4

• y = -2x -1

Is the graph proportional?

• Yes

• No

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

Identify whether the graph represents a  proportional or non-proportional relationship.

• Proportional Relationship

• Non-Proportional Relationship

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

Which graph is non-proportional?

• A

• B

• C

• D