How to graph a quadratic function on a graphing calculator?

Why can't i graph more than one function at the same time with my graphing calculator?

  • My calculator is a Ti-84 if that helpds and I think it has to do with the calculator settings. If I have to reset my calculator, will it delete all of my applications that had originally come with it? (stuff like the Periodic Table, Puzz Pack, Probability Simulation, etc)

  • Answer:

    Make sure that when you enter the functions, both have the equals sign highlighted. If it isn't on one of them, go down to the one you need, press the left arrows, then enter, then move back to the right. It is supposed to automatically select it when you type in a function, but maybe it didn't.

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