Proportional Relationships and Non Proportional

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

Select all graphs that represent proportional relationships.

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• 

Select all graphs that represent a proportional relationship.

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• 

Select all equations that represent a proportional relationship.

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• 

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

Is the graph proportional or non proportional?

• proportional

• non proportional

Which graph is non-proportional?

• A

• B

• C

• D

What does a proportional relationship look like on a graph?

• A straight line that passes through the origin, (0,0).

• A line that does not pass through the origin , (0,0).