To rotate a point \( (x, y) \) around the origin \( (0,0) \) by 270 degrees clockwise, you can use the following transformation formula:
- The new coordinates \( (x', y') \) after rotation are given by: \[ x' = y \] \[ y' = -x \]
Given the point \( (5, 8) \), we apply the formulas:
- \( x' = y = 8 \)
- \( y' = -x = -5 \)
Thus, the new point after rotating \( (5, 8) \) by 270 degrees clockwise is \( (8, -5) \).
Therefore, the correct answer is:
(8, -5)