Question

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



(-2, 1)

(2, -1)

(-1, 2)

Answer 1

@nikato

Answer 2

(-2,1)

Answer 3

@CrashOnce

Answer 4

no.

Answer 5

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

Answer 6

oh so its (-1, 2)?

Answer 7

Yes!

Answer 8

thnx

Answer 9

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