Where are the points supposed to go

The graph of y = ax^2 + bx + c is a parabola that opens up and has a vertex at (0, 5). what is the solution set of the related equation 0 = ax%2 + bx + c?

On a piece of paper, graph y< x+1. then determine which answer matches the graph you drew.

X+ y = 5 ; x - y =3 solve using linear combination