Answer:
Step-by-step explanation:
vertex is (-2, -7).
y = a(x+2)² - 7
Plug (0, -27) into the equation and solve for a.
-27 = 4a -7
a = -5
The equation in vertex form: y = -5(x+2)² - 7.
Expand and put into standard form:
y = -5(x²+4x+4)-7
y = -5x² - 20x - 27
