Direct Variation Inverse Variation or Neither

Write an equation for this relationship.

• y=4x

• y=1/8x

• y=1/4x

• y=8x

Tags

CCSS.6.EE.C.9

Is the given table a direct variation? If so, what is the constant?

• Yes; 1/4

• Yes; 4

• Yes; 2

• No

Is this a direct variation?
y=2x

• yes

• no

Is this proportional?

• yes

• no

Tags

CCSS.8.EE.B.5

Which of the given graphs is a direct variation?

• A

• B

• C

• D

Tags

CCSS.8.EE.B.5

Which of the following represents inverse variation?

• y = kx

• y = k/x

• y = x/k

• y = mx + b

If y varies inversely as x and x=5 when y=20, then what is the constant of variation, k? 

• 121

• 4

• 100

• 6

Assume y varies inversely with x. If x=7 when y=4, what is y when x=2 ?

• 4

• 14 

• 7

• 28

Is the given table a direct or inverse variation? What is the constant of variation?

• Direct, 12

• Inverse, 12

• Direct, 1/12

• Inverse, 1/12

Which of the following represents indirect variation?

• y = kx

• y = k/x

• y = x/k

• y = mx + b