6. Sketch v = (1, 3) , w = (2, -2) , v + w, v - w 7. Sketch AB and PQ and determine whether they are equivalent A = (1, 1) , B = (3, 7) , P = (4, -1) , Q = (6, 5) 8. Are AB and PQ parallel? If so, do they point in the same direction? A = (1, 1) , B = (3, 4) , P = (1, 1), Q = (7, 10) 9. Find ev if v = (3, 4) 10. Find a vector of length four in the direction of the vector v = (-1, 1) . 11. Find a unit vector e making an angle of 47 /7 with the x-axis