1. The problem asks what happens to the coordinates of the point $p(2,3)$ when the transformation $y = -f(x)$ is applied. 2. The original point is $p(2,3)$, where $x=2$ and $y=3$. 3. The transformation $y = -f(x)$ means that for each $x$, the $y$-value is negated. 4. Applying this to the point $p(2,3)$, the new $y$-coordinate becomes $-3$. 5. The $x$-coordinate remains the same because the transformation only affects $y$. 6. Therefore, the transformed point is $p(2,-3)$. Final answer: The point $p(2,3)$ becomes $p(2,-3)$ under the transformation $y = -f(x)$.