Let U be a plane given by the point x and the normal vector n.
Suppose that p(t) = y + Vt be the parametric equation of the line l. Find condition on U and l such that:
a) U || l
b) l perpendicular U
c) l intersects U at a single point, find the point.
Should I start by finding a line in U? And how do I do it?
I'm sorry, I'm really lost on this one here, because the professor can't speak any English.