Linear Equations

A linear equation is a mathematical statement that describes a straight-line relationship between variables. It typically has variables, like x or y, raised to the first power, combined with constants (numbers), and connected by addition or subtraction. For example, y = 2x + 3 shows how y depends on x in a straight line when plotted on a graph. Linear equations are used in various fields to model relationships where changes are steady and proportional, making them fundamental to understanding patterns and solving real-world problems involving predictable, straight-line behavior.