To find the ordered pair of M′ after point M (5, 6) is rotated 90° counterclockwise, we can use the following formula:
(x, y) → (−y, x)
Substituting the values of M (5, 6) into the formula, we get:
(5, 6) → (−6, 5)
Therefore, the ordered pair of M′ after point M (5, 6) is rotated 90° counterclockwise is (−6, 5).
Hope this helped :)