hurry i only have a few mins ASAP I WILL MARK BRAINLEST!!!
What is the mapping rule for a 180 degree rotation about the origin?

1 (x, y)g(–y, x)
2 (x, y)g(–y, –x)
3 (x, y)g(–x, –y)
4 (x, y)g(x, –y