# Coefficient, Constant, Variable & Exponents | Algebra | Maths | FuseSchool

Equations are used everywhere: in computers, business, internet searches, medicine to name a few examples. Which is why we study them a lot in Maths. We have names to describe the different parts: coefficients, variables, constants and exponents. A variable is a symbol for a number we don’t know yet. It is usually a letter. A number on it’s own is called a constant. These are different to the numbers in front of variables: these are called coefficients. They are different to constants, because coefficients always multiply by a variable. A number and a letter is a coefficient and a variable. But a number on it’s own is a constant. If a variable doesn’t have a coefficient in front of it, it means the coefficient is 1. But in algebra we don’t write the 1: 'a' instead of '1a'. Sometimes we can even have letters to represent coefficients: ax + by. Exponents tells us how many times to multiply the value by itself. The exponent has a few different names: exponent, index, power. VISIT us at www.fuseschool.org, where all of our videos are carefully organised into topics and specific orders, and to see what else we have on offer. Comment, like and share with other learners. You can both ask and answer questions, and teachers will get back to you. These videos can be used in a flipped classroom model or as a revision aid. Twitter: https://twitter.com/fuseSchool Access a deeper Learning Experience in the FuseSchool platform and app: www.fuseschool.org Friend us: http://www.facebook.com/fuseschool This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY-NC ( View License Deed: http://creativecommons.org/licenses/by-nc/4.0/ ). You are allowed to download the video for nonprofit, educational use. If you would like to modify the video, please contact us: info@fuseschool.org Click here to see more videos: https://alugha.com/FuseSchool

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