Question

Find the axis of symmetry of the parabola defined by the given quadratic function.

f(x) = x2 + 4x + 9
A) x = 2
B) x = -2
C) x = 4
D) x = 5

Answer 1

i got a for the answer

Answer 2

-4/2(1) = 2

Answer 3

-4/2 = -2 not 2