Answer:
Inverse of G(x) is not a function
Step-by-step explanation:
We have been given with graph and given graph is of the function 
We need to tell whether the inverse of given function is function or not.
We need to interchange the variables to find inverse of a function we will get

Now, after simplifying we will get 
Hence, 
Here for each value of x there will not be different value of y
Therefore inverse of G(x) is not a function.