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pollywallythecat
05.03.2021 •
Mathematics
If P=(2,-1),find the image of P under the following rotation. 180 degrees counterclockwise about the origin
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Ответ:
9514 1404 393
(-2, 1)
Step-by-step explanation:
Rotating a point 180° about the origin in either direction is equivalent to reflecting it across the origin. The effect is to negate both coordinates.
(x, y) ⇒ (-x, -y) . . . . . rotation 180°
(2, -1) ⇒ (-2, 1) . . . . . P' rotated 180° from P
The coordinates of the rotated point are (-2, 1).
Ответ:
it is c
Step-by-step explanation: