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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