All integers are rational numbers. A rational number is in the form a/b, where "a" and "b" are integers, and "b" is not equal to zero. Integers are a subset of the entire set of rational numbers.
An integer is any whole number regardless of whether it is positive, negative or zero. A rational number is considered a ratio or division of two different integers. Any integer can be expressed in the form a/b, where "a" and "b" are integers. The rational representation of any integer "n" can be described as n/1, because any real number divided by 1 is equal to itself.