To rotate a point \((x, y)\) clockwise about the origin by 90 degrees, you can use the following transformation:
\[ (x, y) \rightarrow (y, -x) \]
Given the point \((-4, -6)\), we can apply the transformation:
- The \(x\) coordinate is \(-4\).
- The \(y\) coordinate is \(-6\).
After applying the transformation:
\[ (-4, -6) \rightarrow (-6, 4) \]
Therefore, the new point after rotating \((-4, -6)\) 90 degrees clockwise about the origin is \((-6, 4)\).