Answer:
y = (x+3)^2 -1
Step-by-step explanation:
The vertex among the given points is (-3, -1). The other two points are symmetrical about this one. For a difference from the vertex of Δx = 1, the y-values are 1 more than at the vertex: (0 -(-1)) = 1. This means the scale factor is 1.
The vertex form is ...
y = a(x -h)^2 +k
for vertical scale factor a and vertex (h, k). You have a=1, (h, k) = (-3, -1), so your equation is ...
y = (x +3)^2 -1
