X is left to right. Since the translation is X + 1 , you are adding 1 to the X direction, which moves the shape 1 place to the right.
Y is up and down, the translation is y - 2, which means the shape moves 2 places down.
Looking at one point on the original image, lets use Point C. It is located at X = 2 and Y = 1. Now add 1 to the X and subtract 2 from the y:
The new location for C needs to be X = 2+1 = 3 and Y = 1-2 = -1
The image that has C at (3,-1) is C.