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Assume that y varies inversely with x. if y=27 when x=12, find x when y=-12.
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Assume that y varies inversely with x. if y=27 when x=12, find x when y=-12.

User Jahoe
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y varies inversely with x, means y=k/x
27=k/12 => k=27*12=324
so the equation is y=324/x
when y=-12, -12=324/x => x=324/(-12)=-27
User Ellioh
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