SOLUTION: Y varies inversely with x. If y = -12 when x = 5, find y when x = 3

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Question 1188612: Y varies inversely with x. If y = -12 when x = 5, find y when x = 3

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

y varies inversely with x, so
y=k%2Fx
if y+=+-12 when+x+=+5, we have
-12=k%2F5.........solve for k
-12%2A5=k
k=-60
your formula is:
y=-60%2Fx

find y when x+=+3
y=-60%2F3
y=-20