If the point \((13, -7)\) is on the graph of \(f(x)\), it means that \(f(13) = -7\).
For the function \(f(-x)\), we need to evaluate \(f(-x)\) at \(x = -13\):
- When \(x = -13\), then \(-x = 13\).
- Therefore, \(f(-(-13)) = f(13) = -7\).
This means that the point \((-13, -7)\) is on the graph of \(f(-x)\).
Thus, the correct response is:
The point \((-13, -7)\) must be on the graph of f(−x).