# How do you solve #x^2-x-4=0# graphically?

##### 1 Answer

Sep 4, 2016

From the graph we get

We cannot find the exact answer graphically.

#### Explanation:

First you need to draw the graph of the parabola as

You can do this by plotting points.

Draw up a table, choose some x-values and work out the y-values.

If you compare

"Where does the parabola intersect the x-axis?"

OR

What are the x-intercepts for this graph?"

OR

Find the roots of the equation

From the graph we get

We cannot find the exact answer graphically.

graph{x^2-x-4 [-2.365, 2.635, -1.62, 0.88]}