You are here:

Algebra/history of algebra

Advertisement


Question
For variables, why is the “known” variable, x. What is so special about x. What is the origin of the variable, x? Like, most exams for algebra will use the letter x in lieu of other letters.

Answer
There's nothing special about "x".  You could use any variable.  Somehow, "x" has become associated with the unknown or mysterious (X-Files, for example).  The axes on a graph are usually referred to as the x and y axes where x is the independent variable.  

Algebra

All Answers


Answers by Expert:


Ask Experts

Volunteer


Richard J. Raridon

Expertise

I can answer questions in physics, chemistry, algebra, trigonometry

Experience

Have answered 10,000 questions on AskMe.com in the past two years

Organizations
Sigma Xi, AAAS

Publications
chemistry and physics journals

Education/Credentials
BA in math and physics, MA in physics, PhD in chemistry

©2012 About.com, a part of The New York Times Company. All rights reserved.