Answer
Answers may vary. One system of equations is $2x-2y=0$ $x=y$
Work Step by Step
Green line: $x=y$
Purple line: $2x-2y=0$
Please see the screenshot of the tables for the two equations.
Purple line:
$2x-2y=0$
$2x-2y+2y=0+2y$
$2x=2y$
$2x/2=2y/2$
$x=y$