I would do it that way.
The definition of a rational number is the quotient of any two nonzero integers.
The quotient of two nonzero integers is the definition of a rational number. There are nonzero numbers other than integers (imaginary, rational non-integers) that the quotient of would not be a rational number. If the two nonzero numbers are rational themselves, then the quotient will be rational. (For example, 4 divided by 2 is 2: all of those numbers are rational).
Yes, always. That is the definition of a rational number.
Yes.
Because that is how a rational number is defined!
The absolute value is always positive.
The definition of a rational number is the quotient of any two nonzero integers.
Well, honey, the opposite of a nonzero rational number is just its negative counterpart. So if you have a rational number like 3/4, the opposite would be -3/4. It's as simple as that, no need to overcomplicate things, darling.
The quotient of two nonzero integers is the definition of a rational number. There are nonzero numbers other than integers (imaginary, rational non-integers) that the quotient of would not be a rational number. If the two nonzero numbers are rational themselves, then the quotient will be rational. (For example, 4 divided by 2 is 2: all of those numbers are rational).
Yes, always. That is the definition of a rational number.
Yes, by definition.
Actually the product of a nonzero rational number and another rational number will always be rational.The product of a nonzero rational number and an IRrational number will always be irrational. (You have to include the "nonzero" caveat because zero times an irrational number is zero, which is rational)
Yes, as long as the two nonzero numbers are themselves rational. (Since a rational number is any number that can be expressed as the quotient of two rational numbers, or any number that can be written as a fraction using only rational numbers.) If one of the nonzero numbers is not rational, the quotient will most likely be irrational.
of course
Yes.
It is always irrational.
Yes.