Real Line

The real line, often called the real number line, is a way to visualize all real numbers arranged in order. Imagine a straight, infinitely long line stretching in both directions—left and right—where every point corresponds to a real number like 0, 1, -3.14, or √2. This line helps us understand concepts like distance, size, and position among numbers. It's fundamental in mathematics because it provides a continuous way to measure and compare quantities, forming the foundation for topics like calculus and analysis. Essentially, the real line is a universal coordinate system for real numbers.