Question

The inverse of the function f(x) = 1/2x + 10 is shown.

h(x) = 2x – ?

What is the missing value?

Answer 1

i think its 5

Answer 2

To find the inverse:

Replace f(x) with y
Switch x's and y's, so put x where y is and x where y is.
Solve for y
Replace y with f^-1(x)