Intersecting a curve and a line

I have two 42x1 matrices which define a curve with one on X and other on Y-axis and I have a line. I want to intersect these two and find the intersection point, how can I do that? I also have this unknown in my line, which I plan to find from the intersection point.

Answer 1

[KL]

There is a FEX submission called curveintersections, find it on the below link:

http://de.mathworks.com/matlabcentral/fileexchange/22441-curve-intersections