Question 50146
x - y = -2
y - x = 2

so y will be two greater than x
that means that you will draw a dioganal line which will create a 45 degrees angle  with the x axis. That means it will be parallel to x=y but instead of passing the origin it will pass (0,2) which is the "2" on the y axis.

{{{graph(200,200,-10,10,-10,10,x+2)}}}