Question 927864
Basic idea: replace f(x) with y, swap x and y, then solve for y.



{{{f(x)=7x-63}}}



{{{y=7x-63}}}



{{{x=7y-63}}}



{{{x+63=7y}}}



{{{7y=x+63}}}



{{{y=(x+63)/7}}}



The inverse is *[Tex \LARGE f^{-1}(x)=\frac{x+63}{7}]