3-5 Direct Variation

Select all the equations that represent a direct variation:

• 
• 
• 
• 

Tags

CCSS.7.RP.A.2C

Which of the given graphs is a direct variation?

• A
• B
• C
• D

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.B.4

Does the following table represent direct variation?

• Yes

• No

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.2

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.2

Does the following table represent direct variation?

• Yes

• No

Tags

CCSS.8.EE.B.5

CCSS.8.F.A.2

CCSS.8.F.B.4

Does the following represents direct variation?

• Yes

• No

Tags

CCSS.7.RP.A.2D

Does the following table represent direct variation?

• Yes

• No

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.1

CCSS.8.F.A.3

CCSS.8.F.B.4

Write an equation for this relationship.

• y = 4x
• y = 1/8x
• y = 1/4x
• y = 8x

Tags

CCSS.5.OA.B.3

The value of y is directly proportional to the value of x.

If y = 44 when x = 11, what is the equation?

• 4y = x

• y = x+4

• y = 4x

• y = 1/4x

The value of y varies directly with x. If x = 9 when y = 90, what is the value of x when y = 80?

• x = 10

• x = 8

• x = 12

• x = 9

In a direct variation, y = 39 when x = 3.

Find the equation.

• y=26x

• y=13x

• y=39x

• y=3x