No, it is an integer, and therefor part of the rational number system. An irrational number is, if I remember correctly, a number that goes on forever, and doesn't have a pattern like π (pi)
Negative three is a rational number.
If you have any positive irrational number, then its negative is also irrational.
A negative irrational number can be thought of as an irrational number multiplied by -1, or an irrational number with a minus sign in front of it.
If it says "negative irrational", then obviously it is irrational.
The negative of a rational number is also rational.
Not necessarily. Irrational numbers can be negative or positive.
No, they can be rational or irrational. The sign of a number has nothing to do with it.
No. Irrational and rational numbers can be non-negative.
-Pi is irrational, because it does not terminate or repeat. Whenever you multiply an irrational number by a rational number (-1), the result is an irrational number.