Question

you move up 1 unit and right 1 unit. you end at (-1, 5). where did you start?

Explanation:

Step1: Reverse right - move

To reverse moving right 1 unit, subtract 1 from the x - coordinate of the end - point. So, $x=-1 - 1=-2$.

Step2: Reverse up - move

To reverse moving up 1 unit, subtract 1 from the y - coordinate of the end - point. So, $y = 5-1 = 4$.

Answer:

(-2, 4)