Given:
You move down 2 units and up 8 units.
You end at (0, 4).
To find:
The starting point.
Solution:
Let the starting point be
.
You move down 2 units and up 8 units. So, the rule of translation is:

You end at (0, 4).

On comparing both sides, we get




Therefore, the starting point is (0,-2).