Q. Is −9 an irrational number?Choices:(A) yes(B) no
Define irrational number: Define an irrational number. An irrational number is a number that cannot be expressed as a simple fraction, meaning it's not a ratio of two integers. Its decimal form goes on forever without repeating.
Express −9 as fraction: Determine if –9 can be expressed as a fraction.–9 is an integer and can be expressed as a fraction –9/1, where –9 is the numerator and 1 is the denominator.
Compare −9 to definition: Compare –9 to the definition of an irrational number.Since –9 can be expressed as a fraction with integer numerator and denominator, it does not fit the definition of an irrational number.