Comparing Inverse Variation Functions

Given that y varies inversely with x, if x =7 and y = 4, what is y when x = 2?

• 14
• 10
• 2
• -14

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

What kind of variation does this equation show?
y = 6x

• Inverse Variation
• Direct Variation
• No Variation
• Joint Variation

Given the following equation, identify the constant k.
y = 54/x

• There is one.
• k = x
• 54
• y = k

Given (32, 15) and (12, y). Find the constant k, and then find the missing y value.

• 40
• 48
• -40
• -48

True or False:
Direct Variation passes through the origin of a graph and inverse variation does not.

• True
• False

Does the table show an inverse variation?

• Yes
• No

What kind of variation is shown in this graph?

• Inverse
• Direct

What kind of variation is shown in the graph?

• Direct
• Inverse