Given that the point \((13, -7)\) is on the graph of \(f(x)\), this means that \(f(13) = -7\).
To find the point on the graph of \(f(-x)\), we need to substitute \(-x\) in place of \(x\) in the function. Specifically, we want to evaluate \(f(-x)\).
If \(x = 13\), then \(-x = -13\). Thus, we can determine:
\[ f(-13) = f(-x) \text{ when } x = 13 \]
Since \(f(13) = -7\), then by the property of the function:
\[ f(-13) = -7 \]
This means the point \((-13, -7)\) is on the graph of \(f(-x)\).
Therefore, the correct response is:
The point \((-13, -7)\) must be on the graph of \(f(-x)\).