To rotate a point \((x, y)\) counterclockwise by \(270\) degrees around the origin, you can use the following formula:
\[ (x', y') = (y, -x) \]
where \((x', y')\) are the coordinates of the new point after the rotation.
Given the point \((5, 8)\):
- \(x = 5\)
- \(y = 8\)
Applying the formula:
\[ (x', y') = (8, -5) \]
So, the new coordinates after a \(270\)-degree counterclockwise rotation about the origin are:
\((8, -5)\)
Therefore, the correct response is:
\((8, -5)\)