Inverse Variation

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

(a)  

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

Tags

CCSS.HSA.SSE.A.1

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.3

If 32 men can reap a field in 15 days, in how many days can 20 men reap the same field?

(a)  

Does the table show an inverse variation?

• Yes
• No

Tags

CCSS.7.RP.A.2

CCSS.7.RP.A.3

What is the general equation of inverse variation?

• 
  

  $y=kx$

• $y=\frac{k^2}{x}$

• $y=\frac{k}{x}$

• $y=kx^2$

Tags

CCSS.HSF.BF.A.1

a varies inversely as the square of b. If a is 1 when b is 3, find a when b is 5. 

• 0.36
• 9
• 25
• 36

What is the constant (k) in this inverse variation?

• 12
• 24
• 48
• Not enough information given

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.SSE.A.1

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

The table represents

• direct variation
• inverse variation
• neither
• both

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.SSE.A.1

CCSS.HSF.IF.B.4

CCSS.HSF.LE.A.1

12 men can dig a hole in 8 days. How many men can dig it in 6 days?

(a)