Question 395528
For f:
Domain = {-2,-1,0,1,2}
Range = {4, 2, 1, 1/2, 1/4}

For the inverse function {{{f^(-1)}}}, just switch the roles of the domain and range above:

Domain = {4, 2, 1, 1/2, 1/4}
Range = {-2,-1,0,1,2}.  Now you're ready to graph the inverse function!