PLEASE PLEASE HELP.
Which rule describes the transformation seen here?

Triangle S T U has vertices S negative 1 comma 2, T negative 4 comma 2, and U negative 1 comma 4. It has been rotated ninety degrees clockwise with the transformed image S prime T prime U prime having the vertices S prime 2 comma 1, T prime 2 comma 4, and U prime 4 comma 1.

x comma y becomes negative x comma negative y

x comma y becomes y comma x

x comma y becomes negative x comma y

x comma y becomes y comma negative x

Question

PLEASE PLEASE HELP.
Which rule describes the transformation seen here?

Triangle S T U has vertices S negative 1 comma 2, T negative 4 comma 2, and U negative 1 comma 4. It has been rotated ninety degrees clockwise with the transformed image S prime T prime U prime having the vertices S prime 2 comma 1, T prime 2 comma 4, and U prime 4 comma 1. 

 x comma y becomes negative x comma negative y 

 x comma y becomes y comma x 

 x comma y becomes negative x comma y 

 x comma y becomes y comma negative x

anonymous · Answer

what is this? I don't even?

anonymous · Answer

|dw:1374269936585:dw|

you see the difference of $x$ and $y$ ?