For graphing, it would be best to leave the axes on. To graph, you will need to have the user input equations using strings, then convert them to Y variables, then display the graph screen. Inputing to a string you know how to do, just use the input command. Next, you will need to convert the strings to Y= variables. This is done with the String>Equ command, which is accessed in the catalog [2nd] [0]. The syntax is this String>Equ(StrX,Yx). This puts the equation that was input into the string into a Y variable. Finally, you will need to display the graph. This is done by the DispGraph command, in the program menu, or [PRGM] {Right Arrow} [4].