Let R : R² -> R² be the linear transformation which reflects points through the x-axis and let S be the linear transformation which reflects points through the line y = x. Moreover, let T = S:
a) ◻ Reflect R through the y-axis
b) ◻ Reflect R through the origin
c) ◻ Reflect R through the line y = -x
d) ◻ Reflect R through the line y = 2x