Question

What is the vertex of this quadratic function?

h(x) = -5(x + 7)2 + 11

A.
(-7,-11)
B.
(-7,11)
C.
(7,-11)
D.
(7,11)

Answer 1

The vertex form is a(x - h)^2 + k. Here h(x) = -5(x + 7)^2 + 11 = -5(x - (-7))^2 + 11, so the vertex is (h, k) = (-7, 11). Answer: B.