(1 point) Use the contour diagram of f to decide if the specified directional derivative is positive, negative, or approximately zero. 7 v 1. At the point (2, 2) in the direction of 1", 7 v 2. At the point (1, 1) in the direction of (Y + 5/41 7 v 3. At the point (1, 1) in the direction of (? EH5, 7 v 4. At the point (1, 0) in the direction of _-]:, 7 v 5. At the point (0, 2) in the direction of j, 7 v 6. At the point (0, 2) in the direction of (1" 2;)I1/5. (Click graph to enlarge)