Problem 3. (1 point) To every linear transformation T from to R2, there is an associated 2 X 2 matrix. Match the following linear transformations with their associated matrix. 1. Reflection about the x-axis 2. The projection onto the x-axis given by T(x,y)=(x,0) 3. Clockwise rotation by /2 radians 4. Counter-clockwise rotation by /2 radians 5. Reflection about the line y=x 6. Reflection about the y-axis HHOHO -OO OO TO O OT O LL O G. None of the above