Question

f(x)=(1x-9)/(14x+7); f^-1(x)=?

Answer 1

ho ho ho a raft of algebra
ready ?

Answer 2

\[x=\frac{y-9}{14y+7}\] solve for \(y\) first clear the fraction
\[x(14y+7)=y-9\] multiply out
\[14xy+7x=y-9\] all \(y\) on the left everything else on the right
\[14xy-y=-9-7x\] factor
\[(14x-1)y=-9-7x\] divide
\[y=\frac{-9-7x}{14x-1}\]

Answer 3

Thanks, that helped a lot!

Answer 4

yw