Final answer:
A possible formula for a rational function is f(x) = (ax+b)/(cx+d), where a, b, c, and d are constants.
Step-by-step explanation:
A rational function is defined as the ratio of two polynomials. A possible formula for a rational function is:
f(x) = (ax+b)/(cx+d)
where a, b, c, and d are constants. This formula represents a rational function where the numerator is a linear polynomial and the denominator is a linear polynomial. The values of a, b, c, and d can be determined based on the specific function and its properties.