Answer: You need just to plug n' chug.
y = -2, 1, -1, 0
x = -2, 4, 0, 2
Explanation:
x - 2y = 2
First it wants to know what the Y-value will be if the X-value is entered in.
Problem 1:
(-2) - 2y = 2
add 2 to both sides
-2y = 4
divide -2 from both sides
y = -2
... so across from the column x-value -2 should be the y-value -2.