If y varies inversely as x and y=12 when x=3, find y when x=

itsmelana

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Jul 26, 2008
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If y varies inversely as x and y = 12 when x = 3, find y when x = 4.

I got 12

12x3:3
 
Re: I'm not sure this is right

y varies inversely as x

y = k/x , where k is the constant of proportionality

y = 12 when x = 3

12 = k/3
k = 36

so, the correct inverse relationship is

y = 36/x

now ... what is y when x = 4?
 
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