Biểu diễn miền nghiệm của bất phương trình trên cùng hệ trục Tham khảo câu trả lời từ Trợ lý ảo Lazi a) Để biểu diễn miền nghiệm của bất phương trình 2x+y≥1 trên hệ trục, ta cần vẽ đường thẳng 2x+y=1 và xác định vùng nằm phía trên hoặc bên trái đường thẳng đó. Để vẽ đường thẳng 2x+y=1, ta có thể chọn hai điểm trên đường thẳng và nối chúng bằng một đường thẳng. Ví dụ, chọn điểm (0,1) và (1,-1), ta có: Đường thẳng 2x+y=1 | | | | 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