freeCodeCamp/guide/english/mathematics/what-is-the-range-of-a-func.../index.md

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title: What Is the Range of a Function
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## What Is the Range of a Function
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The range of a function is the complete set of all possible resulting values of the dependent variable, after you substitute the domain. In other words, the range is the resulting y-values you get after substituting all the possible x-values.
For example, for <span class='texhtml'>y = sqrt(x + 2)</span>, the range of this function is <span class='texhtml'>y >= 0</span>.
#### More Information:
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<a href='https://www.intmath.com/functions-and-graphs/2a-domain-and-range.php' target='_blank' rel='nofollow'>Domain and Range of a Function</a>