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The image of a point after a –90° rotation about the origin is (–4, 7). What are the coordinates of the preimage?

The image of a point after a –90° rotation about the origin is (–4, 7). What are the coordinates of the preimage?
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3 votes
The image of a point after a –90° rotation about the origin is (–4, 7). What are the coordinates of the preimage?

asked
User Imjayabal
by
7.9k points

2 Answers

2 votes

Answer:

(-7,-4)

Explanation:

answered
User Joseph Duffy
by
8.9k points
1 vote
The point (-4, 7) is in the 2nd quadrant. The coordinate of the preimage of a -90 degrees rotation that resulted to point (-4, 7) will be in the third quadrant. (i.e. both x and y is negative). Hence, answer is (-7, -4).
answered
User Matthias Bauch
by
8.3k points
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