# Direct Variation, Inverse Variation, And Joint Variation: Question Preview (ID: 29613)

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**z varies jointly with x and y. When x = -1/4 and y = -3, z = 15. Find z when x = -4 and y = 5.**

a) z = -400

b) z = 400

c) z = 200

d) z = -200

**z varies jointly with x and y. When x = 8 and y = 6, z = 12. Find z when x = -4 and y = 5.**

a) z = -5

b) z = 5

c) z = 1/5

d) z = -1/5

**z varies jointly with x and y. When x = 2 and y = -6, z = 24. Find z when x = -4 and y = 5.**

a) z = 40

b) z = -40

c) z = 20

d) z = -20

**y varies inversely with x. If y = -7 when x = 5/3, find y when x = 3.**

a) y = -35/9

b) y = 35/9

c) y = 9/35

d) y = -9/35

**y varies inversely with x. If y = -5/4 when x = -4, find y when x = 3.**

a) y = 5/3

b) y = -5/3

c) y = 15/16

d) y = -15/16

**y varies inversely with x. If y = -1/6 when x = -12, find y when x = 3.**

a) y = 2/3

b) y = -2/3

c) y = 3/2

d) y = -3/2

**y varies inversely with x. If y = 2 when x = 7, find y when x = 3.**

a) y = 14/3

b) y = -14/3

c) y = 63

d) y = -63

**y varies inversely with x. If y = 28 when x = 3/4, find y when x = 3.**

a) y = 7

b) y = -7

c) y = 3

d) y = -3

**y varies inversely with x. If y = 8 when x = -3, find y when x = 3.**

a) y = -8

b) y = 8

c) y = 72

d) y = -72

**y varies inversely with x. If y = 9 when x = 1, find y when x = 3.**

a) y = 3

b) y = -3

c) y = 27

d) y = -27

**y varies inversely with x. If y = -4 when x = 5, find y when x = 3.**

a) -20/3

b) 20/3

c) -12/5

d) 12/5

**Tell whether x and y show direct variation, inverse variation, or neither: 8y = x**

a) direct variation

b) inverse variation

c) neither

d)

**Tell whether x and y show direct variation, inverse variation, or neither: xy = 12**

a) direct variation

b) inverse variation

c) neither

d)

**Tell whether x and y show direct variation, inverse variation, or neither: y/x = 8**

a) direct variation

b) inverse variation

c) neither

d)

**Tell whether x and y show direct variation, inverse variation, or neither: x + y = 6**

a) direct variation

b) inverse variation

c) neither

d)

**Tell whether x and y show direct variation, inverse variation, or neither: y = x + 4**

a) direct variation

b) inverse variation

c) neither

d)

**Tell whether x and y show direct variation, inverse variation, or neither: 4x = y**

a) direct variation

b) inverse variation

c) neither

d)

**z varies jointly with x and y. When x = 6 and y = -7, z = -3. Find z when x = -4 and y = 5.**

a) z = -10/7

b) z = 10/7

c) z = 7/10

d) z = -7/10

**Tell whether x and y show direct variation, inverse variation, or neither: y = 2/x**

a) direct variation

b) inverse variation

c) neither

d)

**Tell whether x and y show direct variation, inverse variation, or neither: xy = 1/5**

a) direct variation

b) inverse variation

c) neither

d)

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