(Practice) Direct and Inverse Variation

Organize these options into the right categories.

Groups:

(a) Direct Variation

,

(b) Inverse Variation

,

(c) Neither

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• 
• 
• 3xy = -12

• y - 4 = 2 (x - 2)

• 
• 
• 
• x - 3y = 15

Tags

CCSS.8.EE.B.5

Tags

CCSS.7.EE.B.4

CCSS.7.RP.A.2

CCSS.7.RP.A.3

Match the given below with the correct equation and constant of variation.

• 
• 
• 
• 

Match the graph with the correct equation of variation.

• inverse variation

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• 
• 
• 

(SHOW WORK)

If x and y vary directly, what is the missing value in the points (x, 4) and (-14, -8)?

• x = -7
• x = -2.3
• x = 2.3
• x = 7

(SHOW WORK)

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

• 26
• 3
• 58.5
• 2

Tags

CCSS.7.EE.B.4

CCSS.7.RP.A.2

(SHOW WORK)

Suppose y varies directly as x. If x = 15 when y = 12, find x when y = 21.

• 8.57

• 16.8

• 24

• 26.25

Tags

CCSS.7.EE.B.4

CCSS.7.RP.A.2

(SHOW WORK)

Given that y varies inversely with x, if x =7 and y = 4, what is y when x = 2?

• 14
• 10
• 2
• -14

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.3

CCSS.HSA.SSE.A.1

(SHOW WORK)

y varies inversely with x. If y = -4 when x = 5, find y when x = 3.

• -20/3
• 12/5
• 20/3
• -12/5