Finding intersection of two lines with two y axes

[Hannah Sheldon]

I am trying to find the intersection of two lines (of course I am just looking for the x coordinate that they share) but I have two y axes. I was able to use aaplot to get the equations for each line, but I am not sure where to go from here.

[Clyde Schechter]

Well if the equations of the lines are y = m1x + b1 and y = m2x + b2, then you can find the intersection using high school algebra.

m1x + b1 = m2x + b2
(m1-m2) x = b2-b1
x = (b2-b1)/(m1-m2)