Answer:
demos is the website
Explanation:
listen i dont know what grade your in in school middle or high but there is this very beneficial website im gonna give you it is graphing we use it in my high school math class so basically you put i the coordinates and doing so its gonna graph it for you. all you have to do is type the equation on the side once done and graphed you click the dots zoom in and out also once you click the dot you answer should be with the number.