Question 73792
how do you solve quadratic equations by graphing?
You would find where the parabola crossed the x-axis.
Say you needed to solve: 
{{{x^2+x-6=0}}}
You could say {{{y=x^2+x-6}}}
Plot some points or put it in a graphing calculator and you get:
{{{graph(300,200,-10,10,-10,10,x^2+x-6)}}}
Notice that the parabola crosses the x axis at (-3,0) and (2,0)
That's the solution.
I hope that's what you needed.
Happy Calculating!!!