To find the corresponding point on the graph of \( f(-x) \) when the point \((13, -7)\) is on the graph of \( f(x) \), we follow these steps:
- The point \((13, -7)\) means that \( f(13) = -7 \).
- For the function \( f(-x) \), we replace \( x \) with \( -x \).
- To find the corresponding point on the graph of \( f(-x) \), we set \( -x = 13 \) (which means \( x = -13 \)).
- Therefore, \( f(-(-13)) = f(13) \) must equal \(-7\).
- This means that \(( -13, -7 )\) will be on the graph of \( f(-x) \).
Thus, the correct point that must be on the graph of \( f(-x) \) is:
The point \((-13, -7)\) must be on the graph of \( f(-x) \).