Answer:
D
Explanation:
Vertex at -1 , -6
Vertex form of the parabola is then
f(x) = a (x- -1)^2 -6
f(x) = a (x+1)^2 - 6
this parabola passes through point 0, -4 use thos to find the value of 'a'
f(0) = -4 = a (0+1)^2 -6 shows a = 2
the equation then becomes
f(x) = 2 (x+1)^2 -6