The point Y with coordinates (-9,5) is rotated counterclockwise about the origin to Y'(9,-5). How many degrees was the point rotated?

Question

The point Y with coordinates (-9,5) is rotated counterclockwise about the
origin to Y'(9,-5). How many degrees was the point rotated? *

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Bella 1 week 2021-09-15T20:29:05+00:00 1 Answer 0

Answers ( )

    0
    2021-09-15T20:30:20+00:00

    Answer:

    180°

    Step-by-step explanation:

    The reflection of a point (x,y) by 180° yields a point (-x,-y). That is, the coordinates are multiplied by -1. So, The point Y with coordinates (-9,5)  rotated counterclockwise about the  origin to Y'(9,-5) is rotated by 180° since, the coordinates are multiplied by -1.

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45:7+7-4:2-5:5*4+35:2 =? ( )