Understanding Lines in Mathematics Understanding Lines in Mathematics 1. Definition of a Line In mathematics, a line is a straight one-dimensional figure that has no thickness and extends infinitely in both directions. It is often represented in a coordinate system by a linear equation. 2. Properties of a Line Infinite Length: A line has no endpoints and extends forever in both directions. Straightness: A line is the shortest distance between any two points. One Dimension: A line has only length and no width or height. Defined by Two Points: A line can be defined by any two distinct points. 3. Types of Lines 3.1. Horizontal Line A horizontal line runs left to right across the page. It has a slope of 0 and is represented by the equation y = c , where c is a constan...