Model Inverse and Joint Variation

State what type of variation the equation represents.

• Direct

• Inverse

• Joint

• None

Tags

CCSS.HSF.LE.A.2

CCSS.HSA.CED.A.1

CCSS.HSF.LE.A.1

The equation 
xy =  25  represents:

• direct variation
• inverse variation
• joint variation
• none of these

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.REI.D.10

The equation    
w = 10chs  represents:

• direct variation
• inverse variation
• joint variation
• none of these

Tags

CCSS.HSF.LE.A.2

CCSS.HSF.BF.A.1

Suppose y varies directly as x.

If y = 22.5 when x = 15, find y when x = 20.

• 1.5

• 337.5

• 30

• 16.875

Suppose y varies jointly as x & z. 
If y = -180 when z = 15
and x = -3,
then find y when x = 7 and z = -5.

• -140
• 140
• -4
• 4

Suppose y varies inversely with x.
If y = 150 when x = 2, find y when x = 25.

• 300
• 75
• 1,875
• 12

Tags

CCSS.7.EE.B.3

CCSS.7.EE.B.4

CCSS.7.NS.A.2

Determine the type of variation.

• Direct

• Inverse

• None

Tags

CCSS.HSA.CED.A.2

Determine the type of variation.

• Direct

• Inverse

• None

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.REI.D.10

CCSS.HSS.ID.B.6