Our lecture today covered Equations of Lines and Planes in 3D. Is this the only approach to learning line and plane equations in 3-d? Honestly do we need r = ro + t*v? To me this seems like a very hard way to learn equations of lines and planes. Maybe I should learn it to be a more well-rounded Cal. student. Any suggestions on if this is the only way to determine Eq.s of lines/ planes? Thanx!