The correct statement to describe a true relationship between any point on \( f(x) \) and \( f(-x) \) is:
If \( (x,y) \) is on the graph of \( f(x) \), then \( (-x,y) \) is on the graph of \( f(-x) \).
This means that for the function \( f(-x) \), the output remains the same as when the corresponding input through \( f(x) \) is negated.