The answer is (4,3). In order to get to point "s" from the midpoint you have to add 2 to the "x" value and 3 to the "y" value. Thus, to find point "r" you simply have to do the opposite by subtracting 2 from the "x" value and 2 from the "y". So, 6-2 and 6-3. This will get you an answer of (4,3). Hope this helped :))
