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Finding the intersection of two lines

What's wrong with using a little math?

If you have:

y = m1 x + b1
y = m2 x + b2

It's a simple system of linear equations.

If you solve them, your intersection is:

x = (b2 - b1)/(m1 - m2)
y = (m1 b2 - m2 b1)/(m1 - m2)

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