The vertices of the triangle formed by the region representing the system of inequalities x + y ≤ 6, x ≥ 1, y ≥ 1
(1, 1) (6, 1) (1, 6)
(1, 1) (5, 1) (1, 5)
(0, 0) (5, 1) (1, 5)
(0, 0) (6, 0) (0, 6)
The vertices of the triangle are (1, 1) (1, 5) and (5, 1).
The region representing the solution of the system of inequalities 4x + 5y ≤ 20, 5x + 2y ≤ 20, x ≥ 0, is a