Question

Find F -1(y)

F(x)= x-10

Answer 1

heres how..
lets take
y = x - 10
now to find the inverse of y... lets make the "x" subject
x = y + 10
now lets switch x and y
y = x + 10
heres the inverse function for ya..
f(x) = y = ( x - 10)
f^-1(x) = ( x - 10)

and the above methods can be used to find the inverse of any function :)