1.   Find the maximum value of f(x, y) = 2x + y - 2 for the polygonal convex set determined by the system of inequalities.
   
    A.      6 B.      12
    C.      18 D.      14
    Hint

  2.   Solve the system of inequalities by graphing.
x + y 4
2x - y < 4
y 0
    A. B.
    C. D.
    Hint

  3.   Name the coordinates of the vertices of the polygonal convex set.
   
    A. (-4,-1), (-4,3), (-2,4), (4,-2) B. (-4,-1), (-4,3), (-2,-4), (4,-2)
    C. (-4,-1), (-4,3), (-2,4), (4,2) D. (-4,-1), (-4,6), (-2,4), (4,-2)
    Hint

  4.   Find the maximum value of f(x, y) = x - 4y for the system of inequalities.
2x + y 3
2x + y -2
y 4
x < 1
    A. -3 B. -16
    C. -17 D. 16
    Hint

  5.   Find the minimum value of f(x, y) = x - 4y for the system of inequalities.
2x + y 3
2x + y -2
y 4
x < 1
    A. 16 B. -3
    C. -17 D. -16
    Hint