Yes, negative 2 is a rational number. A rational number is defined as any number that can be expressed as the quotient or fraction a/b of two integers, where a is the numerator and b is the non-zero denominator. Since negative 2 can be written as -2/1, it satisfies the definition of a rational number.
In general, all integers are rational numbers because they can be expressed as a fraction with a denominator of 1. Therefore, negative 2, being an integer, is also a rational number.