1. What is the magnitude of a? y 2 1 X a -5 -4 -3 -2 2 3 -1 -2 b -3 O A. 4 O B. -4 O C. 3 O D. -32. What is the direction of b? y 5 3 2 b X -7 -6 -5 -4 a -2 -1 2 =1 -2 O A. north O B. south O C. east O D. west3. What is the resultant of a + b? y 5 4 3 N a D X -2 -1 2 3 5 6 -1 -2 O A. (3, 3) O B. (9, 3) O C. (6, 6) O D. ( 7, 5 )4. Find c, if c = a + b. y 5 4 3- a 2 X -7 -6 -5 -4 -3 -2 b -1 -2 -3 O A. ( 7, 6) O B. (-7, 2) O C. (0, -5) O D. (-5, 0)