Help! I have no idea how to graph this linear equality!

x - y is greater than or equal to 2

x - y ≥ 2

-y ≥ -x + 2
y ≤ x - 2

draw the line y = x-2 and shade in the region below the line.
Since the line is included, make it solid

(had it been y < x-2, you would have drawn a dotted line to show it is excluded.)