what do i do, since it says right angle?Find the parametric equations of the line through (5, -3, 4) that intersects the z-axis at a right angle.

how would you do this??Show that the lines (x-1)/-4 = (y-2)/3 = (z-4)/-2 and (x-2)/-1 = (y-1)/1 = (z+2)/6 intersect, and find the equation of the plane that they determine.