To rotate a point \((x, y)\) clockwise by 270 degrees about the origin, you can use the following transformation for the coordinates:
When rotating 270 degrees clockwise (which is equivalent to a 90-degree counterclockwise rotation), the new coordinates \((x', y')\) can be calculated as:
\[ x' = y \] \[ y' = -x \]
Thus, the new point after the rotation will be \((y, -x)\).