1. You asked about the website used to graph functions. 2. I do not use external websites directly; however, a popular and powerful online graphing tool is Desmos. 3. Desmos allows you to input functions and see their graphs interactively. 4. If you want to graph a function, you can visit desmos.com and use their graphing calculator. 5. Let me know if you want me to help you graph a specific function or explain how to use Desmos.