W'rite a complete, neat, organized solution using good form. Your solution must be handwritten and have good ow. Show all steps. Use methods learned in the activities. 1. Determine a unit vector 3 perpendicular to 15 = (2,1;3) algebraically. 2. Determine the intersection of the three planes algebraically. X 2y 32 5 (D X 5y Z i 8 (3 2X y z 14