# How do you solve the equation -x^2-7x=0 by graphing?

$x = 0$ or $x = - 7$
$\textcolor{w h i t e}{\text{XXXXXXX}}$see below for solution by graphing.
If you have graphing software (or a graphing calculator) you should be able to generate the graph for $f \left(x\right) = - {x}^{2} - 7 x$.
You can see that the graph crosses the X-axis (that is $- {x}^{2} - 7 x = 0$) at $x = 0$ and $x = - 7$.