Joint Variation

Joint Variation

9th Grade

10 Qs

quiz-placeholder

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Joint Variation

Joint Variation

Assessment

Quiz

Mathematics

9th Grade

Practice Problem

Hard

Created by

Barbara White

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

If y varies jointly with the product of x and z, and y = 105 when x = 5 and z = 7, find y when x = 9 and z = 10.

270

180

360

255

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

If y varies jointly with the product of x and z, and y = 1000 when x = 10 and z = 20, find y when x = 8 and z = 10.

100

200

300

400

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The variable x is in joint variation with y and z. When the values of y and z are 4 and 6, x is 16. What is the value of x when y = 8 and z =12?

32

64

48

96

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A is in joint variation with B and square of C. When A = 144, B = 4 and C = 3. Then what is the value of A when B = 6 and C = 4?

12

24

36

48

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

If a varies jointly as b and the square root of c, and a = 21 when b = 5 and c = 36, find a when b = 9 and c = 225.

126

196

256

289

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

z varies jointly with x and y. If x = 2, y = 3 and z = 4, find z when x = -6 and y = 2.

-6

-8

-10

-12

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

z varies jointly with x and y. If x = 5, y = -1, and z = 10. Find z when x = -1/2 and y = 7.

5

6

7

8

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