-9 is a rational number
It is all of them except for irrational.
If it says "negative irrational", then obviously it is irrational.
If you have any positive irrational number, then its negative is also irrational.
No. Some negative numbers are irrational and some are not. Some irrational numbers are negative and some are not.
Irrational
Not necessarily. Irrational numbers can be negative or positive.
No, the cube root of -9 is an irrational number.
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.
The negative of a rational number is also rational.
No integer is irrational.
No. Irrational and rational numbers can be non-negative.