Inverse Variation Table

x and y vary inversely. Given (5, 20), what is the constant k?

• 4

• 5

• 25

• 100

Does the equation show an inverse variation? 
y=10/x

• yes

• no

Which equation represents an inverse variation?

• y = 40/x

• y = 40x

• y/x = 40

• x = y/40

The cost per person to rent a mountain cabin is inversely proportional (varies inversely) to the number of people who share the rent. If the cost is $36 per person when 5 people share, what is the cost per person when 8 people share?

• $22.50

• $57.60

• $1.11

• $12.50

If y varies inversely as x, and y = 23 when x = 8, find y when x = 4.

• 26

• 46

• 52

• 92

Which of the following represents indirect variation?

• y = kx

• y = k/x

• y = x/k

• y = mx + b

Determine the type of variation:

• Direct

• Inverse

• Neither

Which of the following represents inverse variation?

• y = kx

• y = k/x

• y = x/k

• y = mx + b

If y varies inversely as x and x=5 when y=20, then what is the constant of variation, k? 

• 121

• 4

• 100

• 6

Assume y varies inversely with x. If x=7 when y=4, what is y when x=2 ?

• 4

• 14 

• 7

• 28