Question

you start at (1, 2). you move left 2 units and right 1 unit. where do you end?

Explanation:

Step1: Analyze x - coordinate change

Moving left 2 units means subtracting 2 from the x - coordinate. Starting x - coordinate is 1, so $1 - 2=-1$.

Step2: Analyze x - coordinate after second move

Then moving right 1 unit means adding 1 to the current x - coordinate. So $-1 + 1=0$.

Step3: Note y - coordinate

There is no vertical movement, so the y - coordinate remains the same as the starting y - coordinate, which is 2.

Answer:

$(0,2)$