a rational number is an integer when it does not have a decimal. An integer is a whole number, no parts of a number... -3, -2, -1, 0, 1, 2, 3 are all integers 2.14 and 6.789 are rational numbers but not integers. see the pattern?
Yes, always. That is the definition of a rational number.
Because that is how a rational number is defined!
Because that is how a rational number is defined!
Yes, integers are always rational.
Integers are counting numbers or include them. 1/2 is a rational number that is not a couinting number.
Yes, that is how a rational number is defined.
Yes, by definition!
Yes.
Yes.
Yes, it is.
No. In fact, no odd integer is irrational. They are all rational.
A rational number which is an integer can be simplified to a form in which the denominator is 1. That is not possible for a rational number which is not an integer.