5.2 Systems of Equations and Graphical Solutions
System of Linear Equations • Solution of a System • Solution by Graphing • Using a Graphing Calculator • Inconsistent and Dependent Systems
In many applications, there is more than one unknown that we wish to solve for. To accomplish this, we must also have more than one equation that involves these unknowns. In fact, we need as many equations as there are unknowns. A group of two or more equations involving two or more unknowns is called a system of equations. In the remaining sections of this chapter, we will discuss various techniques for solving systems of linear equations. We begin by studying systems of two equations with two unknowns.
Two linear equations, each containing the same two ...
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