Based on the given input-output pairs, we can observe that the function seems to behave differently for negative input values compared to non-negative values.

[DESCRIPTION]:
For negative input values, the function returns a constant output of approximately 7.4. However, for non-negative input values, the function returns a different constant output of approximately 37.3.

[DOMAIN]:
The domain of the function is the set of real numbers. There is an interval within the domain where the function behaves differently, specifically for non-negative input values. The behavior changes at x = 0.

[CODE]:
Based on the observed behavior, we can approximate the behavior of the function using the following Python code:

def f(x):
    if x < 0:
        return 7.4
    else:
        return 37.3