Hello! This is very janky and will not work unless you do exact instructions below: y=mx+b is the equation to find a slope of a line to make a slope work, you can put for example y=1/3x+5 press the new button to make a new equation you have to have the x there or else it won't work you have to have a letter at the beginning, and an equal sign after that. do not put any spaces or else it will not work! Following these rules will ensure a user friendly experience! Have fun! NOTE: to refresh your graph, click the green flag.