We've learned two really important things in recent chapters:
|How to solve a quadratic = 0 :|
|How to graph a quadratic:|
Now, let's make the connection between the two! I'll explain it with an example:
Let's graph this guy:
But, there's one other really important thing we need to know:
Where does this guy cross the x-axis?
From our graph, it LOOKS like it might be around x = - .6 and x = .6 ... How can we be sure?