# SOLUTION: hey, this problem is also giving me trouble: if y varies inversely as x and y=-5 when x=12.5, find x when y=15. thanks

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 Click here to see ALL problems on Linear Equations And Systems Word Problems Question 85309: hey, this problem is also giving me trouble: if y varies inversely as x and y=-5 when x=12.5, find x when y=15. thanksAnswer by josmiceli(9660)   (Show Source): You can put this solution on YOUR website!There's a thing called the 'constant of variation' Write the relation like this: This says "Y varies inversely with x with k being the constant of variation Now find k Now finish the problem