Spiral Review 1-F21

In an inverse variation, y = 4 when x = 7.

Find the value of y when x = 2.

• 14

• 10

• 2

• -14

In an inverse variation, y = 150 when x = 2.

Find the value of y when x = 25.

• 300

• 75

• 1,875

• 12

Does this table represent an inverse variation?

• Yes

• No

Tags

CCSS.HSF-LE.A.1B

Does this table represent an inverse variation?

• Yes

• No

Tags

CCSS.HSF-LE.A.1B

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

• x
• y
• 400
• Not enough information given

Tags

CCSS.HSF-LE.A.1B

Determine the type of variation:

• Direct
• Inverse
• Neither

Tags

CCSS.8.EE.B.5

If y varies inversely as x and x=5 when y=20, then what is the constant of variation, k? 

• 121
• 4
• 100
• 6

Is the given table a direct or inverse variation? What is the constant of variation?

• Direct, 12
• Inverse, 12
• Direct, 1/12
• Inverse, 1/12

Assume y varies inversely with x. If x=7 when y=4, what is y when x=2 ?

• 4
• 14 
• 7
• 28

The current in a simple electrical circuit is inversely proportional to the resistance. If the current is 80 amps when the resistance is 50 ohms, find the current when the resistance is 22 ohms.

• 90 amps

• 100 amps

• 105 amps

• 120 amps