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f(x)=k-mx,find

a)f-1(x)in terms of k and m

b)the values of m and k if f-1(14)=-4 and f(5)=-13

Guest Mar 23, 2017
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\(f(x) = k -mx\\ y = k - mx\\ x' = k - my'\\ my'=k-x'\\ y'=\dfrac{k-x'}{m}\\ f^{-1}(x) = \dfrac{k-x}{m}\)

Is this correct? Someone please check it for me?

MaxWong  Mar 23, 2017

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