rectangle abcd is reflected over the y-axis. what rule shows the input and output of the reflection, and what is the new coordinate of a'? (1 point)
rectangle abcd is shown. a is at negative 5, 1. b is at negative 5, 3. c is at negative 1, 3. d is at negative 1, 1.
(x, y)→(y,−x); a' is at (1, 5)
(x, y)→(−y, x); a' is at (−1, −5)
(x, y)→(−x, y); a' is at (5, 1)
(x, y)→(−x,−y); a' is at (5, −1)