Direct Variation

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

• 26

• 3

• 58.5

• 2

What does the Direct Variation Equation look like?

• Y= kx

• y = mx + b

• y = b

• y = x

Is this a direct variation?

• yes

• no

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

• (0, 0)

• (1, 0)

• (0, 1)

• (1, 1)

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

if y is directly proportional to x, y is 10 when x is 3. What is the value of y when x is 5?

• 16 2/3

• 1.5

• 6

• 12

Which of the given graphs is a direct variation?

• A

• B

• C

• D

Tags

CCSS.8.EE.B.5

 y varies directly with x, and y is 16 when x is 32. Which equation represents this situation?

• y=32x

• y=16x

• y=2x

• y=(1/2)x

Which graph shows a proportional relationship between x and y?

• A

• B

• C

• D

Tags

CCSS.7.RP.A.2D

Which graph shows a proportional relationship between x and y?

• A

• B

• C

• D

Tags

CCSS.7.RP.A.2D