Desmos is an online graphing calculator that allows users to create and visualize mathematical functions and equations. It is widely used by students and educators for its user-friendly interface and powerful features, enabling users to plot graphs, explore transformations, and analyze data interactively. In addition to graphing, Desmos offers a variety of educational tools, including activities and lessons designed to enhance learning in mathematics. These resources help users understand concepts such as algebra, geometry, and calculus, making it a valuable tool for both teaching and self-study.