The graph of the boundary equations for the system of inequalities is shown with the system. x + 3y 2 6 3x + 6y 2 15 ax + y z 5 x 20, y 20 3x+ y = 5 3x + by = 15 x + 3y = 6 A Locate the solution region. 3x+ y = 5 3x + y = 5 3x + y - S 3x + y - 5 3x + by = 15 3x + 6y = 15 3x + 6y - 15 3x + 6y - 15 x + 3y = 6 x + 3y = 6 x + 3y = 6 x + 3y - 6 Find the corners. (Select all that apply.) D (0,5) D (0, 2) O (0, 5) D (0, 5 ) O (1, 2) O (1, 3) (5. 0) O (2, 1) O ( 3, 1)