For Exercises 19-24, suppose m is the line with equation x = -5, line n is the line with equation y = 1, line g is the line with
equation y = x, and line h is the line with equation y = -2. Given A(9,-3), B(6,4), and c(-1,-5), what are the coordinates of the vertices of AA'B'C' for each reflection? 22. Rn
we can find 
by substituting 4 into the main function.