Find the vertex of this parabola:

y = - 5x2 - 10x - 15

Enter the correct answer.

Vertex of parabola (-1, - 10)

Step-by-step explanation:

For a given quadratic y = ax² + bx + c, the vertex (h, k) is found by computing h = - b/2a, and then evaluating y at h to find k. If you've already learned the Quadratic Formula, you may find it easy to memorize the formula for k, since it is related to both the formula for h and the discriminant in the Quadratic Formula: k = (4ac - b2) / 4a.