Answer is in the graph and how to below
Given y = -x + 2
Using slope intercept form y = m x + b
m = -1
b = 2
Starting with b = 2 is the y intercept at (0, 2) or 2 on the y axis. Place your point. From this point, use m = -1/1 in y/x format to find your next points. go down -1 and right +1. Place your point at ( 1, 1). Do this again, down -1 and right +1, place your point at ( 2, 0). Draw your line. See attachment.