# SOLUTION: find f^-1(x) f(x)= -8x + 48

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 Question 279162: find f^-1(x) f(x)= -8x + 48Found 2 solutions by stanbon, Theo:Answer by stanbon(57361)   (Show Source): You can put this solution on YOUR website!Find f^-1(x) if f(x)= -8x + 48 ----- y = -8x + 48 Interchange x and y to get: x = -8y + 48 Solve for "y": -8y = x-48 y = -(x-48)/8 That is f^-1(x) ========================== Cheers, Stan H. Answer by Theo(3464)   (Show Source): You can put this solution on YOUR website!I think you want the inverse function of f(x) = -8x + 48 solve for x. add 8x to both sides of this equation and subtract f(x) from both sides of this equation to get: 8x = -f(x) + 48 divide both sides of this equation by 8 to get: x = -f(x)/8 + 6 replace x with f^-1(x) and f(x) with x to get: f^-1(x) = -x/8 + 6 that's your inverse equation.