Answer: g(x) = 3x²
Explanation:
Since we have given that

So, the function of g(x) would be

since we have given that
(1,3) on g(x means (x,ax)
Here, x = 1.
So, ax = 3
which implies that a = 3.
So, g(x) would look like

and the graph of g(x) is compressed.