Direct/Inverse Variation

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.7.EE.B.4

CCSS.7.RP.A.2

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

determine the constant of variation given
{(-15,3)  (-5,1)  (0,0)  (10,-2)}

• -1/5
• 10
• 2
• -5

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

If y varies inversely as x and y=2 as x = 8, find x when y= -7

• 1/4
• 4
• 16
• 16/-7

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.CED.A.2

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.3

The sales at a baseball game vary directly with the number of people attending.  If sales for a game are $12,000 when 800 people attend, determine attendance if sales are $30,000

• 1200 people
• 1500 people
• 2000 people
• 2400 people

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.CED.A.2

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.3

CCSS.HSA.SSE.A.1

CCSS.HSF.BF.A.1

CCSS.HSF.LE.A.1

CCSS.HSF.LE.A.2