Can u help me by explaining and show working out 2 this question? I can understand when some1 explains and shows me.....I've attempted it but cant

a) Determine the equation of the function whose graph is shown, given that it has the form y=ax^2 + bx + c, for -6<x<2.

points on graph are; (-6,13) (2,5)

crosses y axis at (0,1)

b) Determine the turning point of the curve.

THIS ISNT FOR AN ASSIGNMENT OR EXAM THING. Just normal work.