Regentsprep.org links to Function, Domain, & Range

http://www.regentsprep.org/Regents/math/algtrig/ATP5/LFunction.htm - Definition of a relation and a function.

http://www.regentsprep.org/Regents/math/algtrig/ATP5/EvaluatingFunctions.htm - Functional notation and evaluation.

http://www.regentsprep.org/Regents/math/algtrig/ATP5/DomainRange.htm - Graphing domain and range of a function.

http://www.regentsprep.org/Regents/math/algtrig/ATP5/OntoFunctions.htm - One to one and onto functions.