Answer
Answers may vary. One system of equations is
$x-y=5$
$x+y=1$
Work Step by Step
Please see the screenshot of the tables for the two equations.
Purple line: $x-y=5$
Green line: $x+y=1$
If we substitute the $x$ and $y$ for $3$ and $-2$ respectively, for the purple line:
$x-y=5$
$3-(-2)=5$
$5=5$ (true)
Green line:
$x+y=1$
$3+(-2)=1$
$1=1$ (true)
Purple line:
$x-y=5$
$x-y+y-5=5+y-5$
$x-5=y$ ($m=1$, y-intercept is -5)
Green line:
$x+y=1$
$x+y-x=1-x$
$y=-x+1$ ($m=-1$, y-intercept is 1)