Yes, -3 is both a rational number and an integer.
Rational yes, integer no.
-3 is a rational whole number which is another name for an integer
2/3 is a rational number but not an integer.
The number 3 is a rational number (as is any integer).
It is a rational number, not an integer.
Every integer is a rational number.
A rational number which is an integer can be simplified to a form in which the denominator is 1. That is not possible for a rational number which is not an integer.
It is an integer. All integers are rational but not irrational. All rational and irrational numbers are real numbers.
It is a real rational negative integer number whose value is -3
It is a number that can be expressed as a fraction but is NOT an integer. For example. 3 is an integer and it is rational since we can write 3/1, but 1/3 is not an integer and it is rational since we wrote it as a fraction or a ratio. Remember that a rational number is one that can be written as A/B where A and B are integers. Now if B is 1, which is certainly an integer, A/1 is rational but since A is an integer, A/1 is an integer.
It is not an integer but is a rational number.