Graph Direct Variation Equations

The cost c varies directly as the number of n pencils is written as

• c = kn

• k = cn

• n = k/c

• c = k/n

Which of the given graphs is a direct variation?

• A

• B

• C

• D

Which equations represent a direct variation?

• y=2x

• xy=2

• y=2/x

• y/x=2

Given the table, determine if it represents a direct variation, inverse variation, or neither.

• Direct Variation

• Inverse Variation

• Neither

Y varies directly with x, and y is 84 when x is 16. Which equation represents this situation?

• y=1344x

• y=100x

• y=5.25x

• y=4/21x

Which of the given graphs is a direct variation?

• A

• B

• C

• D

The graph of a direct varation equation will always pass through the origin. ​ (a)  

• true

• false

Create the graph of the direct variation shown.

Does the graph show a direct variation?

• Yes

• No