We have the following statements:
I. The x intercept is located at the (-3,0)
This is correct, but it only referes to one axis (x)
II. The coordinates of the y-intercept are (0,9)
This is correct, but it only referes to one axis (y)
III. The axis of symmetry is x=-3
This is the best supported the graph as it is correct and referes to the entire graph