Kite 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'?

(x, y)→(y, x); a' is at (2, −7)
(x, y)→(−x, y); a' is at (7, 2)
(x, y)→(−x,−y); a' is at (7, −2)
(x, y)→(y,−x); a' is at (2, 7)

The

according to the image the coordinates of pre image are:

A(-7, 2), B(-5, 3) C(-2, 2) and D(-5, 1)

Kite ABCD is reflected over the line y = x, the main rule to find the coordinates of the images is  (y, x)

for example if A(-7, 2) the image  A' is A'(2, -7)

the answer is (x,y)→(y,x); A' is at (2, −7)

C. expression because any expression or equation may contain more than one variable