Question

Triangle ABC is rotated to create the image A'B'C'. Which rule describes the transformation? (x, y) → (x, –y) (x, y) → (y, x) (x, y) → (–x, –y) (x, y) → (–y, –x)

Answer 1

The first transformation is a reflexion across the x-axis. 
The second one is a reflexion across the x=y line. 
The third one is a rotation of angle pi.

So the correct answer is the third one. 

Answer 2

the awnser is c on edjenuity