Question

Can u plz help meeee plzz

Answer 1

To find the inverse of a function, simply switch the x and y, then set it equal to y:


`x = (1)/(2) y + 4 \\ \\ x -4 = (1)/(2) y \\ \\ f^(-1) (x) = 2x-8`

Next, plug 4 in for x:


`f^(-1) (4) = 2(4)-8 \\ \\ f^(-1) (4) = 8-8 \\ \\ f^(-1) (4) = 0`