1) determine the vertex of the quadratic function. a) (0, 2) b) (2, 0) c) (0, -2) d) (-2, 0)

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints