Proportional Graphs

Are the ratios in this table all proportional?

• Yes

• No

Are the ratios in this table all proportional?

• Yes

• No

Is this graph an example of direct variation?

• Yes

• No

Answer explanation

Graphs of direct variation (proportional) are always:

- Straight Lines

- Go through (0,0) - the origin

Do the graphs of Jose and Edwin's runs show direct variation?

• Edwin's - Yes

  Jose's - No

• Edwin's - Yes

  Jose's - Yes

• Edwin's - No

  Jose's - Yes

• Edwin's - No

  Jose's - No

Which graphs could represent a proportional relationship?

• A

• B

• C

• D

Which graph is proportional?

• A

• B

• C and D

• All of the graphs are proportional

Which graph is proportional, and why?

• Graph 1 because it is straight

• Both graphs are proportional

• Graph 2 because it is steep

• Graph 2 because it is straight, and goes through the origin

Which graph is proportional?

• A

• B

• C and D

• All of the graphs are proportional

Which graph is non-proportional?

• A

• B

• C

• D

Which of the following graphs does not represent a proportional relationship?

• Graph A

• Graph B

• Graph C

• Graph D