Asked by Steph

What is the domain of

y = sqrt(5 - x)
Answered by Steph
and the range please!
Answered by Steve
√u is only defined where u>=0.

so, √(5-x) is only defined where 5-x >= 0.

Thus, the domain is all reals x <= 5.
Answered by Steve
the range is all reals >= 0.
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