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Is -12 a rational number?

Answer 1

Yes

By definition, the set #QQ# of rational numbers is basically all the numbers that can be written as an integer over an integer, ie all the fractions. #QQ={m/n | m,n in ZZ, n!=0}#.

Since #-12# can be written as #-12/1#, it implies it is a rational number, ie #-12 in QQ#.

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Answer 2

Skylar Adams

Yes, -12 is a rational number because it can be expressed as the quotient of two integers, where the denominator is not zero. In this case, -12 can be expressed as -12/1, where both -12 and 1 are integers, and 1 is not equal to zero. Therefore, -12 meets the criteria for being a rational number.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.