Question

The graph of parabola opens downwards if​

Answer 1

Answer:

If the value of a is less than 0 (a<0), then the parabola graph opens downwards. The axis of symmetry from the standard form of the parabola equation is given as x= -b/2a. Vertex Form of Parabola Equation The parabola equation can also be represented using the vertex form

Answer 2

Answer:

If a > 0 (positive) then the parabola opens upward. If a < 0 (negative) then the parabola opens downward.