How do you find the domain and range of $y= -9$ ?

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Answer 1 · 2017-10-09T23:03:42

See a solution process below:

This equation states for each and every value of $x$ (the input), $y$ is equal to $9$ .

There are no restrictions on the input which is also the Domain. Therefore the Domain is the set of all Real Numbers or: ${RR}$

The output, for each and every input, is always $-9$

Therefore the Range is: ${-9}$

How do you find the domain and range of y= -9y= -9?