Alg. 2 Cheat Sheet

Doma­in: The domain of a function is the set of all possible input values (often the "­­x" variable), which produce a valid output from a particular function. It is the set of all real numbers for which a function is mathem­­at­i­cally defined.

Range: The range is the set of all possible output values (usually the variable y, or sometimes expressed as f(x)), which result from using a particular function.