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College Algebra
The range of a function is the set of all possible output values it can produce. It corresponds to the y-values in the coordinate plane.
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The set of all possible input values (x-values) for which a function is defined.
A relation between sets that associates every element of a first set to exactly one element of a second set.
A function that reverses another function; if $f(x)$ maps x to y, then its inverse $f^{-1}(y)$ maps y back to x.