I need help with these questions please

Answers and explanations.

A: Does the graph have a maximum and minimum. Yes. -) use the formula x=-b/2A and you will find that the maximum is at coordinations (3,0)

B:What are the coordinations of the vertex of the graph. The vertex is marked at (3,0) on a graph.

C:What is the equation of the axis of symmetry. The equation is x=3

D:What are the roots of the quadratic function. The roots of the function is x=3

E:What is the y intercept. The y intercept is (0,9)

:)