How do I calculate where 2 lins intersect?

I’m trying to get this dot to to be where these 2 lines intersect. I don’t have alot of experience with coding so I don’t know how to make it work.
I’m using the test version of wick editor

eEe1-16-2024_18-50-34.wick (2.1 KB)

Look up “system of equations”, it’s a mathematical way to detect where 2 (straight) lines intersect