Answer:
See below.
Explanation:
We can find three points by picking values of one of the variables and calculating the other. I'll pick a few values of x: -2, 0, 2, 4. Now calculate the values of y with the equation x-y = 0. We can rearrnage this to -y = -x, or y = x. This tells us that y equals x, so the data points would be:
(-2,-2)
(0,0)
(2,2)
(4,4)
Plot these points on graph paper and then draw a straight line through them. Or use an online graphing utility, such as the free DESMOS. The graph is attached.