1. The problem statement, all variables and given/known data Find the parametric equations for the line which passes through the point (3,5,7) and parallel to the vector <2,6,8>. Is the line perpendicular to the plane 5x + 6y +7z = 10? 2. Relevant equations line equation, r = Ro + tV 3. The attempt at a solution line equation, r = Ro + tV -------------> = <3,5,7> + t<2,6,8> hence, x = 3 + 2t ; y = 5 + 6t ; z = 7 + 8t the problem is.. how am i going to prove that the line perpendicular to the plane 5x + 6y +7z = 10 or not..?