What is the domain and range of $y=x^2 - 5$ ?

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What is the domain and range of $y=x^2 - 5$ ?

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Answer 1 · 2015-08-15T21:32:06

There are no restrictions on $x$ (no fractions, no roots, etc)
Range of $x:(-oo,+oo)$

Explanation:

Since $x^2>=0$ (always non-negative) the lowest value that $y$ can have will be $-5$ . There is no upper limit.
Domain of $y: [-5,+oo)$
graph{x^2-5 [-14.24, 14.24, -7.11, 7.13]}

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What is the domain and range of $y=x^2 - 5$ ?

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What is the domain and range of $y=x^2 - 5$ ?