Interactive Mathematics
Interactive Mathematics: Domain and Range of a Function
The definitions of domain and range are given in this lesson. Then use the examples to practice determining domain and range of several functions. Real-world applications are provided to enhance the concept.
CK-12 Foundation
Ck 12: Algebra: Vertical Line Test
[Free Registration/Login may be required to access all resource tools.] Learn how to determine whether or not a relation is a function.
CK-12 Foundation
Ck 12: Algebra: Algebraic Functions
[Free Registration/Login may be required to access all resource tools.] In this lesson students determine if a given relation or graph is a function. Students watch a video tutorial, examine guided notes and attempt practice problems.
CK-12 Foundation
Ck 12: Analysis: Domain and Range
[Free Registration/Login may be required to access all resource tools.] This lesson covers finding the domain and range of functions and sets of points. Students examine guided notes, review guided practice, watch instructional videos,...
Other
Spelling police.com: Analogy
Informational site that provides the definition for and examples of analogy.
Shmoop University
Shmoop: Relations
Explore relations through a video and examples, then practice with handouts.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Relation
Find a quick, concise explanation of a relation. Examples are given and clearly explained.
ClassFlow
Class Flow: Functions vs. Non Functions
[Free Registration/Login Required] In this lesson students will analyze a relation to determine whether or not it is a function.
Oswego City School District
Regents Exam Prep Center: Definition of a Relation and a Function
Very basic definitions of mathematical relations and functions can be found here. The single example provided shows a relation which is not a function and explains what makes it so.