Final answer:
To find the original coordinates of point A given the translation T=([2],[-3]), we subtract the translation vector from the coordinates of A'(4,7), resulting in A being located at (2, 10).
Step-by-step explanation:
To determine the coordinates of point A given the translation T=([2],[-3]) that maps A(x, y) onto A'(4,7), we can subtract the translation vector from the coordinates of A'. The original point A can be found using the following calculation:
- Ax = A'x - Tx = 4 - 2 = 2
- Ay = A'y - Ty = 7 - (-3) = 10
Therefore, the coordinates of point A are (2, 10).