Inverse Variations and Rational Expressions Quiz

Simplify

Simplify.

Given: y varies directly with x. If y = -4 when x = 2, find y when x = -6.

Find the value of k.

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

• 26

• 46

• 52

• 92

Is the given table direct or inverse variation? What is the constant or slope

• direct, 12

• Inverse, 12

• direct, 1/12

• Inverse, 1/12

Determine the type of variation:

• Direct
• Inverse
• Neither
• Geometric

Which equation represents an inverse variation?

• y = 40/x
• y = 40x
• y/x = 40
• x = y/40

What type of variation does this table show?

• Inverse
• Direct
• Both
• Neither

What is an excluded value?

• A value that makes the denominator equal to 0

• A number that makes the numerator equal to 0

• The solution

• An ostracized number

• 11

• -11

• no restricitons

• 1/2