To find the coordinates of point \( Y' \) after a 180° rotation about the origin, we take the coordinates of point \( Y(-2, 6) \) and apply the rotation transformation.
The formula for rotating a point \( (x, y) \) by 180° about the origin is:
\[ (x, y) \to (-x, -y) \]
Applying this transformation to point \( Y(-2, 6) \):
\[ Y' = (-(-2), -6) = (2, -6) \]
So the coordinates of \( Y' \) are \( (2, -6) \).
Thus, the correct response is:
Y′(2,−6).