Inverse and Direct Variation

If y varies inversely as x, and y = 14 when x = 8, find y when x = 7.

• 16

• 20

• 24

• 28

If y varies inversely as x, and y = 32 when x = 3, find x when y = 15.

• 3/5

• 8/5

• 16/5

• 32/5

If x varies inversely as the square root of y, and x = 9 when y = 121, find x when y = 81.

• 7

• 11

• 13

• 17

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

• 26

• 46

• 52

• 92

The image is an example of the graph of a(n)

• direct variation

• inverse variation

• neither

• both

If x varies inversely as y, and x = 3 when y = 8, find y when x = 4.

• 3

• 6

• 9

• 12

y varies inversely with x. If y = 40 when x = 16, find x when y = -5.

• -64

• -128

• -256

• -512

What is the constant of variation of the equation, x = 29/y?

• 0

• 1

• 29

• y

Which equation represents an inverse variation?

• y = 40/x

• y = 40x

• y/x = 40

• x = y/40