Bb C.
asked 10/11/17Assume that y varies directly with x, then solve. if y=-18 when x=6, find x when y=6
Assume that y varies directly with x, then solve. if y=-18 when x=6, find x when y=6
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1 Expert Answer
Arturo O. answered 05/14/20
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Direct variation means that
y = kx
y/x = k = constant
y1/x1 = y2/x2 ⇒
x2 = (y2/y1)x1
x1 = 6
y1 = -18
y2 = 6
x2 = (6/-18)(6) = -2
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Lu H.
y(alpha)1/x
y=k/x
-6=x/-2
k=12
x=5 , k=12
y=k/x
y=12/5
y=2.4
11/08/17