Joint and Combined Variation

Question 1

Which equation(s) represent joint variations?

Revolt · Accepted Answer

mr001-4.jpg; mr001-5.jpg

Question 2

What is the constant of variation?k =

Revolt · Accepted Answer

5

Question 3

When x = 1 and y = –2, z = .

Revolt · Accepted Answer

-10

Question 4

What equation describes this variation?

Revolt · Accepted Answer

z = kxy

Question 5

The variable varies directly with a and inversely with , and when = 2 and =5.The constant of variation is k = .

Revolt · Accepted Answer

3/8

Question 6

What is the value of k?

Revolt · Accepted Answer

2.5

Question 7

The volume of a gas varies directly with temperature, T, and inversely with pressure, P. Which of the following equations represents that relationship?

Revolt · Accepted Answer

mc001-1.jpg

Question 8

When a = 1 and b = 5, what is the value of c?

Revolt · Accepted Answer

3/40

Question 9

What is the missing value of x? ⇒ 6

Revolt · Accepted Answer

12

Question 10

To the nearest liter, the volume is liters.

Revolt · Accepted Answer

10

Joint and Combined Variation Answers

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