Question

The vertex of the parabola in the day-plane above is (0,c). Which of the following is the tru about the parabola witg the equation y=-a(x-b)^2+c?

A.) The vertex is (b,c) and the graph opens upward.

B.) the vertex is (b,c) and the graph opens downward.

C.) the vertex is (-b,c) and the graph opens upward.

D.) the vertex is (-b,c) and the graph opens downward.

Answer 1

y=-a(x-b)^2+c has vertex (b, c)

because -a so the graph opens downward

Answer

B.) the vertex is (b,c) and the graph opens downward.