Answer:
The transformed point B' is: (-x, -y)
which agrees with option "D" from your list of possible solutions.
Step-by-step explanation:
In a reflection across the x-axis, the x coordinate stays the same, while the y-coordinate adopts its opposite. That is, from y it becomes "-y". Therefore, now the point (x, y) got transformed into (x, -y).
In the second step, this new point is reflected across the y-axis. Then , in such reflection, the y-coordinate stays the same, while the x-coordinate gets transformed into its opposite (x becomes "-x". So for our case, the point (x, -y) now gets transformed into (-x, -y).
