1 Answer

Sander Van Keer · Answer 1 · 2020-12-29T20:36:15+0000

Answer:

see explanation

Explanation:

Under a counterclockwise rotation about the origin of 90°

a point (x, y ) → (- y, x ), thus

P(1, - 1 ) → P'(1, 1 )

Q(3, - 2 ) → Q'(2, 3 )

R(3, - 4 ) → R'(4, 3 )

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