casio can do graphs on device for under $40

https://www.walmart.com/ip/Casio-FX-9750Glll-Graphing-Calcul...

The reason you can get used ti's for $30 is because that's how much they're actually worth.

You can get a catiga if you really want for like $17: https://www.aliexpress.us/item/3256809054964211.html

... or you can go with TI for $160 ...

I mean a laptop running windows can use the old power toy calculator or something like speed crunch to do graphing and I'm sure Linux has countless others, with Chromebooks probably having more for free online as well, I can only assume.

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