Other Forms of Direct Variation

Which graph shows a proportional relationship between x and y?

• A

• B

• C

• D

Tags

CCSS.7.RP.A.2D

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

Is this a direct variation?

• yes

• no

Which of the given graphs is a direct variation?

• A

• B

• C

• D

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

If y = 132 when x = 11, what is the value of y when x = 17?

• y = 144

• y = 12

• y = 204

• y = 71

The number of miles Jim runs is directly proportional to the time spent running.

If he runs 6 miles in 46.8 minutes, how long will it take him to run 13.1 miles?

• 92.35 minutes

• 7.8 minutes

• 102.18 minutes

• 150.67 minutes

The mass of a substance varies directly with the volume of the substance. The volume of 100 kilograms of the substance is 80 liters.

What is the volume, in liters, of 3.2 kilograms of this substance?

• 2.12 cubic liters

• 4 cubic liters

• 6.34 cubic liters

• 2.56 cubic liters

Write an equation for this relationship.

• y = 4x

• y = 1/8x

• y = 1/4x

• y = 8x

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Which of the given graphs is a direct variation?

• A

• B

• C

• D

Tags

CCSS.8.EE.B.5

Does the following table represent direct variation?

• Yes

• No