-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, the cube root of -9 is an irrational number.
Not necessarily. Irrational numbers can be negative or positive.
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.
The negative of a rational number is also rational.
Not necessarily. Negatives can be rational or irrational - each one is the same as its positive counterpart.
It's rational. It's the ratio of -1 to 9 .
No. Irrational and rational numbers can be non-negative.