Variation Quiz

Is the following graph direct, inverse, or neither?

• Direct
• Inverse
• Neither

Is the following graph direct, inverse, or neither?

• Direct
• Inverse
• Neither

According to Hooke's Law, the force needed to stretch a spring is proportional to the length of the spring stretched. If 41 pounds stretches a spring 3 inches, how much will the spring be stretched by a force of 58 pounds?

• 4.24 inches
• 13.67 inches
• 7.24 inches
• 5.24 inches

y varies directly as x. If y=20 when x=4, find the constant of proportionality. 

• k=4
• k=1/4
• k=1/5
• k=5

Suppose y varies inversely with x.
If y = 150 when x = 2, find y when x = 25.

• 300
• 75
• 1,875
• 12

Tags

CCSS.7.EE.B.3

CCSS.7.EE.B.4

CCSS.7.NS.A.2