Math 2 Module 7 Review

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

• 14
• 10
• 2
• -14

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

Does the table show an inverse variation?

• Yes
• No

What kind of variation is shown in this graph?

• Inverse
• Direct

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

Describe the transformation.

• Down 1
• Reflect over y-axis
• Up 1
• Reflect over x-axis

Which of these equations shifts a radical equation right 5 times and down once?

• y = √(x - 5) - 1
• y = √(x + 5) - 1
• y = √(x - 5) + 1
• y = √(x + 5) + 1

Match the correct equation with the given graph.

• y = √(x) + 2
• y = √(x) - 2
• y = √(x + 2)
• y = √(x - 2)

What are the transformations of this functions compared to the parent function?

• Translated right 5, translated down 2, and reflected over the x-axis

• Reflected over the x-axis, vertical stretch 2, and translated right 5

• Reflected over the x-axis, vertical stretch 2, and translated left 5

• Translated right 5, translated down 2