Inverse Variation of Rational Functions

Does this table represent an inverse variation?

• Yes

• No

What is the x-intercept of this rational function?

• (-9, 0)

• (0, 0)

• (4, 0)

• (2, 0)

The time to complete a project varies inversely with the number of employees.
If 3 people can complete the project in 7 days, how long will it take 5 people?

• 12 days

• 4.2 days

• 6.2 days

• 10 days

What is the constant (k) in this inverse variation?
y = 400/x

• x

• y

• 400

• Not enough information given

The frequency of a violin string varies inversely as its length. Suppose a violin string 0.65 meters long vibrates 4.3 times per second. What frequency would a string 0.5 meters long have?

• 5.59 Times Per second

• 5.9 Times per second

• 2.15 Times per second

• 2.795 Times per Second

• A

• B

• C

• D

Find the inverse function

• 
• 
• 
• 

Suppose y varies inversely with x.
If y = 150 when x = 2, find y when x = 25.

• 300

• 75

• 1,875

• 12

What kind of equation is this?
xy=8

• Linear Equation

• Direct Variation

• Inverse Variation

• Joint Variation