# How do you find the axis of symmetry and the vertex for #y = -x^2 -10x?#

##### 1 Answer

Mar 24, 2017

Axis of symmetry:

The vertex is at

#### Explanation:

There is a formula to find the axis of symmetry of a parabola.

The standard form of a parabola is

Axis of symmetry:

We have

The vertex lies on the line of symmetry, so as soon as you have the

The vertex is at