The transformation starts with T-1, 1(x, y) and ends with RO, 90° (counter-clockwise).
To find the original point, we work backwards.
We start with RO, -90° (clockwise):
\((x, y)\rightarrow(y, -x)\)
which gives
\((-4, 1)\rightarrow(1, 4)\)
We then do the reverse of T-1, 1(x, y), which is T1, -1(x, y):
\((x, y)\rightarrow(x+1, y-1)\)
which gives
\((1, 4)\rightarrow(2, 3)\)
so the answer is \((2, 3)\).
