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

##### 1 Answer

The axis of symmetry is

The vertex is

#### Explanation:

**Axis of Symmetry**

The graph of a quadratic equation is a parabola. First find the axis of symmetry. This is the vertical line that divides the parabola in half. The formula for the axis of symmetry is

**The axis of symmetry is #x=1/2#.**

**Vertex**

Now find the vertex, which is the maximum or minimum point on the parabola. In this case it will be the minimum point.

**The vertex is #(1/2,-2 1/4)#.**

Next determine some points by substituting values for

graph{y=x^2-x-2 [-10, 10, -5, 5]}