I believe you meant (x,y) to (x+3, y-4).
In that case, you would add three to all of the x-coordinates and subtract four to all your y-coordinates.
(-2,-1) is now (-2+3, -1-4). This is (1,-5).
(0,-5) is now (0+3, -5-4). This is (3,-9).
(3,-2) is now (3+3, -2-4). This is (6, -6).
