find the inverse of f(x)=-9/x+8

Question

anonymous · Answer

Just solve for $x$.

anonymous · Answer

Do you know how to solve for a variable?

anonymous · Answer

Also is it $$
f(x) =-\frac{ 9}{x}+8
$$Or $$
f(x) = -\frac{9}{x+8}
$$

anonymous · Answer

if f(x)=−9/x+8 then f(x)^-1 = -9/(x-8) 
if f(x) = -9/(x+8) then f(x)^-1 = - (x+8)/x

anonymous · Answer

@kimcarlos: no it's not that . inverse function is replacing the x  by y and y by x in the original function and then solve for y.

anonymous · Answer

@Hoa  thats what i exactly did..even though it does actually go with the very essence of an inverse function,

anonymous · Answer

to me, when replacing x by y. I got y = (-9/x ) -8 is the inverse function. I just compared with yours and figure out that they are not the same. sorry if I am wrong. but if I am not wrong, would you please re-check the work