Triangles DEF and D′E′F′ are shown on the coordinate plane below:
Triangle DEF and triangle D prime E prime F prime with ordered pairs at D negative 1, 6, at E 1, 3, at F 6, 3, at D prime 6, 1, at E prime 3, negative 1, at F prime 3, negative 6.
What rotation was applied to triangle DEF to create triangle D′E′F′?
(x, y) → (x, −y)
(x, y) → (−y, x)
(x, y) → (−x, −y)
(x, y) → (y, −x)
The correct answer is:
(x, y) → (-y, x)