Answer:
A. x and y switch places and new y-value is the opposite (x,y) becomes (y-x)
Step-by-step explanation:
B went from (-1, 4) to (4, 1) and D went from (2, 1) to (1, -2). It is shown here that the x and y values have switched places, so we can eliminate choices C and D (x and y also did not increase by 4). We can see that both new y-values are the opposite of their original signs, -1 changing to 1, and 2 changing to -2. Option B only implies that the numbers switched places with no indication of the change in sign. If this were true, then B would go from (-1, 4) to (4, -1) and D would go from (2, 1) to (1, 2). Therefore, option A is the answer.
hope this helps!
