Indirect Variation

Which of the following represents indirect variation?

• y = kx

• y = k/x

• y = x/k

• y = mx + b

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

• 4

• 14 

• 7

• 28

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

• x

• y

• 400

• Not enough information given

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

• 121

• 4

• 100

• 6

Y varies inversely with x, and y is 0.5 when x is 4. Which equation represents this situation?

• y=2x

• y=2/x

• y=4x

• y=x/2

If x and y are in an inverse variation then which of the following is correct?

• x - y = constant

• x + y = constant

• xy = constant 

• x⁄y is constant 

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

• 300

• 75

• 1,875

• 12

What kind of equation is this?
xy = -18

• Linear Equation

• Direct Variation

• Inverse Variation

• Joint Variation

Identify whether the given relation is Direct or Indirect Proportion?
The number of workers on a job and the time to complete the job

• Direct Proportion

• Indirect Proportion 

The population of a country and the area of land per person are inversely proportional

• TRUE

• FALSE