The school auditorium has 900 seats. the inequalitymc018-1.jpg, with x representing adults and y representing children, can be solved to find the possible combinations of adults and children attending an event. which reason describes why the ordered pair (450, 450) must be included in the solution set of the inequality? the ordered pair is in the shaded region of the graph of the inequality. the context of the problem allows only integer solutions. the x-value is equal to the y-value. the ordered pair is on the boundary line of the graph of the inequality.