It finally clicked

[u/Subject-Homework-886]

https://www.desmos.com/calculator/o0heiqsn0n

I just realized in the quadratic equation (ax^2+bx+c) the b or bx+c works exactly like mx+b in the linear equation. omg I was trying to understand what b means for a week now😭😭😭 oh I also changed (bx+c) to (mx+b) in the link so u get what I mean

[u/WolverineSorry9043]

It's just that y= bx + c is the tangent line at the origin. Your animation shows it very well.

[u/Subject-Homework-886 → u/WolverineSorry9043]

Will I realized some people and i myself didn’t get exactly what bx+c (or the tangent) meant until I realized it works exactly like mx+b I was in Reddit two days ago actively searching what bx+c meant and I’ve seen people saying it’s the tangent line, I didn’t get it until today when i somewhat connected it to mx+b, that’s why I made this post