To find the new position of point A (2, 4) after a 90-degree counterclockwise rotation about the origin, we can use the following transformation rule:
- The coordinates (x, y) after a 90-degree counterclockwise rotation become (-y, x).
Applying this to point A (2, 4):
- x = 2
- y = 4
After rotation, the new coordinates will be:
- New x = -y = -4
- New y = x = 2
Therefore, the new position of point A after the rotation is (-4, 2).
Thus, the correct response is: (−4, 2).