Question

A parabola has a vertex at (-1, 0) and opens down. What is the equation of the parabola? y = -x2 - 1 y = -(x - 1)2 y = -(x + 1)2

Answer 1

The answer is D

Explanation:

Answer 2

When the parabola opens down, it means the x² term must have a minus sign in front of it.

When it has a vertex shifted to the left by 1 (normally it would be at (0,0) this means the x² becomes (x+1)².

Combine these statements and D is the right answer! y = -(x+1)²