# What Are Linear Equations & When Do They Apply?

Linear equations describe a relationship between two variables that have a proportionate relationship, meaning a change in the first variable always produces a proportionate change in the other. Li...
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http://www.ehow.com/info_8148732_linear-equations-do-apply.html

## How to Apply Systems of Linear Equations?

A system of equations contains more than one equation with multiple variables that correlate so that the equations can be solved simultaneously. Methods of solving systems include substitution, whe...
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http://www.ehow.com/how_8492922_apply-systems-linear-equations.html

## How to Solve Linear & Non-Linear Equations Then Determine if They Are Linear or Not?

Solving equations, whether linear or nonlinear, is a matter of isolating x on one side of the equation, and numerical coefficients on the other. Specific methods for doing so will vary among equati...
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http://www.ehow.com/how_8429719_solve-then-determine-linear-not.html

## How to Graph Equations, Linear Equations, Coordinates and Functions?

Some high school math courses require students to be proficient in using a graphic calculator. Many classes ask that students purchase a Texas Instruments calculator such as a TI-83, TI-84 Plus or ...
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http://www.ehow.com/how_8095002_graph-linear-equations-coordinates-functions.html

## How to Compare Linear Equations & Linear Inequalities?

Linear equations and linear inequalities are two major concepts in algebra. The part "linear" in both linear equations and linear inequalities indicate that they involve only variables whose expone...
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http://www.ehow.com/how_8378088_compare-linear-equations-linear-inequalities.html