Is -2.75 a whole number, integer or ration number

Its going to be a rational number and integer, since Integers are whole numbers and their opposites {..., -3, -2, -1, 0, 1, 2, 3, ...}. equal to zero that do not have a fraction or decimal {0, 1, 2, 3, ...}. Whole numbers are a subset of integers. All whole numbers are integers.