AWhat type of parabola is this

BWhat is the vertex of the parabola

CTo find the 'a' value using the graph of a horizontal parabola: Start at the vertex, then go straight up one unit. Then, however much you have to move horizontally will tell you the 'a' value. If you move left, then 'a' is negative, and if you move right, then 'a' is positive.

What is the 'a' value for the given graph?

DWhat is the equation for the given parabola