Question

you move up 1 unit and left 1 unit. you end at (4, 2). where did you start? ( , )

Explanation:

Step1: Reverse the horizontal move

Moving left 1 unit to get to 4 means we started at $4 + 1=5$ for the x - coordinate.

Step2: Reverse the vertical move

Moving up 1 unit to get to 2 means we started at $2- 1 = 1$ for the y - coordinate.

Answer:

$(5,1)$