Answer:
let's say x1 = y2. for instance, that would mean that for every X, y would go up by 2. That would mean -1x = Y-2 because to get to -1 you have to subtract 1 by 2 because there is still 0 to account for.
so the table would look like this
-3=-6
-1=-2
1=2
3=6
5=10