Question

Julio’s rotation maps point K(–6, 9) to K’(9, 6). Which describes the rotation? 90 degrees clockwise rotation 180 degrees rotation 90 degrees counterclockwise rotation 270 degrees clockwise rotation

Answer 1

90 degrees clockwise

Explanation:

EDGE2020

Answer 2

Answer: 90 degrees clockwise rotation

Explanation:

Common rotations about Origin :

90° clockwise (x,y)→(y,-x)

90° counterclockwise (x,y)→(-y,x)

180° (x,y)→ (-x,-y)

270° clockwise (x,y)→(-y,x)

Given: Julio’s rotation maps point K(–6, 9) to K’(9, 6).

Rotation corresponding to this is (x,y) → (y,-x) since K(–6, 9) → K’(9, -(-6)) = K(9,6).

Therefore, Julio’s rotates 90° clockwise to map point K(–6, 9) to K’(9, 6).

so , correct answer is "90 degrees clockwise rotation".