# Linear Equations

## Prerequisites

### Linear Equations

#### Introduction

• A linear equation is an equation, when graphed, produces a straight line.
• For example:
• More generally, it is any equation of the form:
• a1 to an and b are real numbers, and are the coefficients of the equation.
• x1 to xn are the variables of the equation.
• Linear equations do not contain terms such as:
• x2
• 2x
• Because these terms are not linear
• they do not produce straight lines when graphed.