Suppose Tommy walks from his home at (0, 0) to the mall at (0, 7), and then walks to a movie theater at (6, 7). After leaving the theater Tommy walks to the store at (6, 0) before returning home. If each grid square represents one block, how many blocks does he walk?

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

thats not a system of equations, that is a solution