Look at the graph above and comment on the sign?

Question

Look at the graph and comment on the sign of D or the discriminant. Form the quadratic equation based on the information provided and find its solution. The points are (-1,0), (0.67,0), and (-0.16,2) which is the vertex.

I can't copy the graph. I didn't answer my own question. I gave the points that were on the graph. The parabola is positive with the vertex pointing downward.

Answer 1

three points determine a parabola
but, . . give us a hint where the parabola is facing
we can solve . . . OK
but it takes us . . . 4 parabolas
its a long process

Answer 2

We can't see the graph.