The Purplemath Forums

Helping students gain understanding and self-confidence in algebra.

Skip to content

Function and relations: Is it possible to have a function w/  TOPIC_SOLVED

Quadratic equations and inequalities, variation equations, function notation, systems of equations, etc.
Post a reply

Function and relations: Is it possible to have a function w/

Postby Tooter on Sun Feb 22, 2009 10:26 pm

Is it possible to have a function without a relation? I think the answer is no but I'd like some confirmation or correction! thanks
Tooter
 
Posts: 2
Joined: Sun Feb 22, 2009 10:24 pm
Top

Sponsor

Sponsor
 
Top

  TOPIC_SOLVED

Postby stapel_eliz on Sun Feb 22, 2009 10:29 pm

Tooter wrote:Is it possible to have a function without a relation? I think the answer is no but I'd like some confirmation or correction! thanks

Your instinct is correct! :wink:

For a complete explanation, try this lesson on functions. But the short answer is that any pairing of information is a relation, but only certain "well behaved" relations are actually functions. Functions are a sub-category of relations.

All functions are relations, but many relations are not functions! :D
User avatar
stapel_eliz
 
Posts: 1729
Joined: Mon Dec 08, 2008 4:22 pm
Top
Post a reply

Return to Intermediate Algebra

Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group. Color scheme by ColorizeIt!