A town's recreation department is updating its parks. The parks must have slides and swings. Let x be the number of swing sets and y be the number of slides. The number of new slides must be more than three times the number of new swing sets. Each swing set costs $275 and each slide costs $168. They can spend no more than $1,250. Select all of the constraints for this situation. I know the two answers are : 275x+168y≤1250 y>3x x>0 y>0 but my question is how did you get the x>0 and y<0