These are some videos that I created just to give you a basic understanding of how to use your Texas Instruments Graphing Calculator. We will use these functions multiple times in my courses.
TI 84 Intersections, Zeroes, Min and Max
https://youtu.be/RxJb4_gw0Rg
https://youtu.be/RxJb4_gw0Rg
TI 84 Scatterplots and Regressions
https://youtu.be/jCB0m4iPlxs
https://youtu.be/jCB0m4iPlxs