OpenStudy (anonymous):

The image of the point (1, -2) after a rotation of 180Â° about the origin is (-2, 1) (2, -1) (-1, 2)

2 years ago
OpenStudy (anonymous):

@nikato

2 years ago
OpenStudy (anonymous):

(-2,1)

2 years ago
OpenStudy (anonymous):

@CrashOnce

2 years ago
OpenStudy (nikato):

no.

2 years ago
ganeshie8 (ganeshie8):

here is the rule for 180 degree rotation \[(x,~y) \longrightarrow (-x,~-y)\]

2 years ago
OpenStudy (anonymous):

oh so its (-1, 2)?

2 years ago
ganeshie8 (ganeshie8):

Yes!

2 years ago
OpenStudy (anonymous):

thnx

2 years ago
ganeshie8 (ganeshie8):

yw:) that should make sense because you're essentially reflecting the given point about the origin. so the signs of coordinates will flip

2 years ago