How to rotate and pivot a gui to be the length of two points?

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#1

Basically right im learning derivative math in boblox and i got my gradient and stuff working

Basically what I want to do is draw a ray between those two points (a ray is basically like a line tha goes on forever in math) but like i dont know how to do this in 3d space without cframes let alone 2d. Pls help

Screen Shot 2021-01-25 at 7.48.58 AM
Screen Shot 2021-01-25 at 7.48.58 AM362×540 32 KB

derivativeMathBoblox.rbxl (23.3 KB)

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#2

Maybe this could help?? Drawing a line between 2 points If you have any questions about it feel free to ask, I think I understand it somewhat.

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#3

I can understand that for fixed points but how would i go about for dynamically moving frames without having to constantly destroy > add

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