Answer:
-1 is an integer, rational number and negative number
Explanation:
An integer is any number that is on the number line that is a whole number.
For example: 1, -2, and 3 are all integers, but 3/5 is not a integer
It is also a rational number since it can be expressed as a ratio: -1/1
However, square roots and pi are not rational numbers
Negative numbers are all numbers to the right of zero.