Inverse Variation and Logarithms

Determine the type of variation:

• Direct

• Inverse

• Neither

Does the table show an inverse variation?

• Yes

• No

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

• yes

• no

What kind of variation is shown in the graph?

• Direct

• Inverse

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

• direct variation

• inverse variation

• neither

• both

• direct variation
• inverse variation
• neither direct nor inverse variation

Determine the type of variation:

• Direct

• Inverse

• Neither

The number of hours to paint a house varies inversely with the number of painters working. A 2400-square foot house can be painted in 27 hours (x) by 6 painters (y). How many painters would need to work in order to paint the house in 18 hours?

• 8 painters

• 10 painters

• 9 painters

• 11 painters

What kind of equation is this?

• Linear Equation

• Direct Variation

• Inverse Variation

• Joint Variation

Which of the following represents inverse variation?

• y = kx

• y = k/x

• y = x/k

• y = mx + b