No, it is a real, rational number. It can also be called an integer, whole number, and natural number.
No because -9 is a rational number
The square root of 9 is irrational
9 is a rational number
Yes 9 times pi is an irrational number because it can't be expressed as a fraction
No, it is rational.
No
-9 is a rational number
Any of the numbers which cannot be expressed as a ratio of two integers is irrational.
No, it is rational.
2.25
No.
no. it is 9
No, it is rational.