please help me understand this concept. professor didn't explain this well at all

Solve the LP problem. If no optimal solution exists, indicate whether the feasible region is empty or the objective function is unbounded. HINT [See Example 1.] (Enter EMPTY if the region is empty. Enter UNBOUNDED if the function is unbounded.) Maximize and minimize p = x + 2y subject to x+yz2 x+ ys 10 x-ys2 x - yz - 2. Minimum: P = X ( x, y ) = Maximum: P = X ( x, y ) = (