How to add sliding values and an intercept chart

I came across this image with sliders for values and a chart that I want to learn how to do to add to my own calculator. I have tried learning how to do the chart but AI hasnt really been remotely helpful enough for me as it has for helping me build the rest of my calculator. The sliding values are kind of a secondary but I really want to learn how to get this chart primarily.

First image should be an image of my sheet so far and 2nd should be the image of the sheet I found that has the chart I want to try to incorporate.

Apparently I can only submit 1 upload per post… this is the second image.

what did you ask ?

me (no AI :wink: ), no sure either what’s your problem with adding a chart ?
https://books.libreoffice.org/en/CG71/CG7103-ChartsAndGraphs.html#toc5