# What is the vertex form of #y=-13x^2-x-19#?

##### 1 Answer

This gives the vertex as

#### Explanation:

The equation of a parabola can be written as:

We have

To change an equation into vertex form:

Step 1. Make

Step 2. Add and subtract

Step 3. Write 3 terms as a perfect square and simplify the others

Step 4: Multiply by

This gives the vertex as

graph{y = -13x^2-x-19 [-0.2135, 0.4115, -19.2013, -18.8888]}