Desmos.com provides an online graphing calculator. It runs entirely in the browser without the need to download anything and has all the essential features of a graphing calculator.
A graphing calculator is a calculator that can plot graphs and solve simultaneous equations. Students adn teachers often use graphing calculators in math classes to help visualise the properties of mathematical equations. Some graphing calculators have additional features such as a programming language or an algebraic solving system. Desmos.com is a basic graphing calculator that plots functions in two-dimensional Cartesian and polar geometry. Alternatively, use WolframAlpha.com for complex plotting and other advanced mathematical tasks.