hi :) for part (d) , if the diagram is not given , is there an easier method to find out the coordinates of point s instead of having to sketch the diagram ?

Answer:
(-2,-3)
Step-by-step explanation:
The diagonals share a common midpoint
(-3+4)/2, (0-1)/2 = (3+x)/2, (2+y)/2
1 = 3+x ; x = -2
-1 = 2+y ; y = -3