Trapezoid abcd is reflected over the line y = x. what rule shows the input and output of the reflection, and what is the new coordinate of a'? trapezoid abcd is shown. a is at negative 5, 1. b is at negative 4, 3. c is at negative 2, 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)