circle and point

[Ben Bush]

is there any python code doing this:
there are two line segments (2x+y-1=0 with the coordinates of two ending
points are (1,-1) and (-1,3);
x+y+6=0 with the coordinates of two ending points are (-3,-3) and
(-4,-2);). They extend and when they meet each other, stop extending.
how can i use python to implement this in Tkinter?

--
Thanks!
Ben Bush
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