Use the zeros and the labeled point to write the quadratic function represented by the graph.

A. y = x2 - 2x-8
B. y= 2x2 + 4x - 16
C. y= x2 + 2x-8
O D. y=2x - 12x + 16

If the angle bisectors of a pair of opposite angles of a quadrilateral are the opposite sides of a parallelogram formed by the two angle bisectors and two sides of the quadrilateral, is the quadrilateral always a parallelogram? explain your answer.