Basically, can somebody recommend me a graphing program for the following requirements?
Able to handle an equation that will change based on user input with multiple variables
Can change on the website without having to load to another page
Draws multiple graphs on the same canvas in different colors
Able to change the starting and ending x values and change the X Tick ( the intervals between lines) based on user input on the site
Has a fixed Y start and end with a constant tick