# How do you identify the important parts of #x^2-2x-8=0# to graph it?

##### 1 Answer

x-intercepts:

vertex:

#### Explanation:

I think the most important parts are the x-intercepts and the vertex.

**x-intercepts** (The value of

Given the function

Now that you've factored it, you can say that the x-intercepts are:

Mark the points

**vertex**

To solve for the vertex, you will have to convert the function into the vertex form

You can see here that

After you have plotted the vertex and x-intercepts, just add a few more points by inserting any value to

It should look like this:

graph{x^2-2x-8 [-8.97, 11.03, -9.32, 0.68]}