Direct and Inverse Variation

• direct variation
• inverse variation
• neither direct nor inverse variation

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.1

CCSS.8.F.A.2

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.F.B.5

CCSS.8.SP.A.2

CCSS.8.SP.A.3

• direct variation
• inverse variation
• neither direct nor inverse variation

Tags

CCSS.HSF.LE.A.1

Which of the following represents direct variation?

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

Tags

CCSS.8.EE.B.5

CCSS.8.F.B.4

CCSS.8.SP.A.2

CCSS.8.SP.A.3

In a direct variation, y = 39 when x = 3. 
Find the value of y when x = 2.

• 26
• 3
• 58.5
• 2

Tags

CCSS.8.F.A.1

CCSS.8.F.A.3

CCSS.8.F.B.4

A person’s weekly pay is directly proportional to the number of hours worked. Shawn’s pay is $123.00 for 20 hours of work. What is the constant of variation?

• k = 123
• k = 20
• k = 6.15
• k = 0.16

Tags

CCSS.8.F.B.4

CCSS.8.SP.A.3

What ordered pair does a direct variation always go through when graphed?

• (0, 0)
• (1, 0)
• (0, 1)
• (1, 1)

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

Ounces of medication vary directly with the weight of the patient. If a 120-pound adult requires 3 ounces of a medication, how many ounces would be needed for a 200-pound adult?

• 2

• 3

• 5

• 9

Tags

CCSS.8.F.B.4

CCSS.8.SP.A.3

• direct variation
• inverse variation
• neither direct nor inverse variation

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.F.B.5

CCSS.8.SP.A.3

State what type of variation the equation represents.

• Direct

• Inverse

• Joint

• None

State what type of variation the equation represents.

• Direct

• Inverse

• Joint

• None

Tags

CCSS.8.EE.B.5