Question

A triangle is rotated 90° about the origin. Which rule describes the transformation?

O(x,y) (-X, -y)
O(x,y) → (-y, x)
O (x, y) - (-y, -x)
(x, y) - (y, -x)

Answer 1

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Answer 2

2nd option

Explanation:

Under a rotation about the origin of 90°

a point (x, y ) → (- y, x )