8.1 Inverse Variation Warm Up

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

• True
• False

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

• yes
• no

Tags

CCSS.HSF-LE.A.1B

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

• There is one.
• k = x
• 54
• y = k

Tags

CCSS.HSF-LE.A.1B

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

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

x and y vary inversely. Given (5, 20), what is the constant k?

• 4
• 5
• 25
• 100

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

• 14
• 10
• 2
• -14

The cost per person to rent a mountain cabin is inversely proportional (varies inversely) to the number of people who share the rent. If the cost is $36 per person when 5 people share, what is the cost per person when 8 people share?

• $22.50
• $57.60
• $1.11
• $12.50