The coordinates of a point are (x,y)
-x (x units to the left of 0)
+x (x units to the right of 0)
-y (y units down of 0)
+ y (y units up to 0)
For the poit A. Coordinate in x for point A is -1 (is 1 unit left of 0) and coordinate in y for point A is 4 (is 4 units up to 0)
Then, the coordinates of A are: (-1 ,4)
