Modeling with Rational Functions

Question 1

Step 1: Set up the correct type of variation equation. y =

Revolt · Accepted Answer

A: kx

Question 2

Check all the equations that are examples of joint variation.

Revolt · Accepted Answer

A: ; C: ; E:

Question 3

Step 1: Set up the correct type of variation equation. y =

Revolt · Accepted Answer

B: kx/z

Question 4

Cooling down, Lars pedals 56 rpms. Which equation shows his speed?

Revolt · Accepted Answer

A:

Question 5

Step 1: Set up the correct type of variation equation. z =

Revolt · Accepted Answer

C: kxy

Question 6

Set up the correct type of variation equation.

Revolt · Accepted Answer

C:

Question 7

Which describes the combined variation shown in the equation ?

Revolt · Accepted Answer

D: F varies directly with x and y, and inversely with z.

Question 8

Step 2: Determine the constant. k =

Revolt · Accepted Answer

D: 2.5

Question 9

Which of these statements are true for joint variations? Check all that apply.

Revolt · Accepted Answer

B: The dependent variable is related to the product of the independent variables by a constant of proportionality, k.; C: The equation must have at least two independent variables.

Question 10

Determine the constant of variation.

Revolt · Accepted Answer

B:

Modeling with Rational Functions Answers

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