Answer:
f^-1 ( 2) = 8
Step-by-step explanation:
When we have a function we have( x,y) where the input is x and the output is y. The inverse has an input of y and an output of x ( y,x)
Since f(8) = 2 The input is 8 and the output is 2
f^-1 ( 2) The input is 2 so the output is 8
