Section 1.1 LinearEquations

A linear equation in x is an equation of the form ax

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Unformatted text preview: tion in x is an equation of the form ax + b = 0 for some fixed real numbers a and b . Example 1 7x − 5 is a linear expression. 2 7x − 5 = 0 is a linear equation. Outline Linear Equations Equations in More Than One Variable Solutions of Equations A solution of an equation in x is a value of x that makes the equation true. To solve an equation is to find all solutions of the equation. Two equations are equivalent if they have the same set of solutions. Example 1 5 One solution of 7x − 5 = 0 is x = . 7 Outli...
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