Question: what is the difference of polynomial and rational?
Answer: The degree of a polynomial function determines the end behavior of its graph. If the degree of a polynomial is even, then the end behavior is the same in both directions. ... A rational function is a function of the form f(x)=P(x)Q(x), f ( x ) = P ( x ) Q ( x ) , where P(x) and Q(x) are both polynomials.