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shinyuki_1912
2 năm trước
a) Xác định hàm số y = ax + b biết rằng đồ thị của nó đi qua hai điểm A(- 1; -3) và B(0; 2). -x+y=1 (d) b) Cho hệ phương trình (I): { 12x - 2y=2 (d) Không giải hệ phương trình, hãy xác định số nghiệm của hệ (I) dựa vào vị trí tương đối của 2 đường thẳng (d1) và (d2).
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