Direct & Inverse Variation

Which of the following represents direct variation?

• y = kx
• y = k/x
• y = x/k
• y = mx + b

Tags

CCSS.HSF.BF.A.1

Which of the following represents inverse variation?

• y = kx

• y = k/x

• y = x/k

• y = mx + b

 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

Tags

CCSS.7.RP.A.2B

y varies directly as x, if y=12 when x=5, find y when x=3

• 36/5
• 15/12
• 12/5
• 12/15

y varies directly as x, if y=4 when x=3, find x when y=-12

• -16
• 16
• -9
• 9

Tags

CCSS.8.EE.C.7

CCSS.8.F.A.3

CCSS.8.F.B.4

Points (3,10) and (x, 15) represent a direct variation. Find x.

• 50
• 5
• 3.5
• 4.5

y varies inversely as x, if y = -3 when x = -6, find y when x = 14.

• 11
• -11
• 9/7
• 7/9

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.CED.A.2

CCSS.HSA.REI.A.1

Which equation represents an inverse variation?

• y = 40/x
• y = 40x
• y/x = 40
• x = y/40

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.CED.A.2

CCSS.HSF.BF.A.1

Which equation below represents a direct variation?

• y = -2x
• y = -3x -5
• y = -1
• x + 3y = 15

Tags

CCSS.HSF.BF.A.1

The image is an example of the graph of a(n)

• direct variation
• inverse variation
• neither
• both

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.REI.D.10

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7