Answer: b) 180° rotation & reflection over x-axis
Explanation:
Rotation of 180° changes the signs of both x and y.
(x, y) → (-x, -y)
Reflection over the x-axis changes the sign of y.
(-x, -y) → (-x, y)
(x, y) (-x, y)
(0, 1) → (0, 1)
(1, -1) → (-1, -1)
(5, 3) → (-5, 3)