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linear equation

noun, Mathematics
1.
a first-order equation involving two variables: its graph is a straight line in the Cartesian coordinate system.
2.
any equation such that the sum of two solutions is a solution, and a constant multiple of a solution is a solution.
Compare linear operator.
Origin
1810-1820
1810-20
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for linear-equation

linear equation

noun
1.
a polynomial equation of the first degree, such as x + y = 7
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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linear-equation in Science
linear equation  
An algebraic equation, such as y = 4x + 3, in which the variables are of the first degree (that is, raised only to the first power). The graph of such an equation is a straight line.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for linear-equation

linear equation

statement that a first-degree polynomial-that is, the sum of a set of terms, each of which is the product of a constant and the first power of a variable-is equal to a constant. Specifically, a linear equation in n variables is of the form a0+a1x1++anxn=c, in which x1, , xn are variables, the coefficients a0, , an are constants, and c is a constant. If there is more than one variable, the equation may be linear in some variables and not in the others. Thus, the equation x+y=3 is linear in both x and y, whereas x+y2=0 is linear in x but not in y. Any equation of two variables, linear in each, represents a straight line in Cartesian coordinates; if the constant term c=0, the line passes through the origin

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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