Intersection of vector and triangle side

[virusys]

Homework Statement

I have a triangle with given vertices ABC. Given a vector that starts from A and intersects side BC, how can I find the point of intersection, p?

Thanks

Homework Equations

The Attempt at a Solution

 

[tiny-tim]

welcome to pf!

hi virusys! welcome to pf!

find the two coordinate equations of the red line and of the line BC, and solve them as a pair of simultaneous equations