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2 năm trước
Cho hàm số bậc nhất y=ax-4 (1). Xác định hàm số a trong mỗi trường hợp sau a) Đồ thị của hàm số (1) cắt đường thẳng y=2x-1 tại điểm có hoành độ bằng 2 b)Đồ thị của hàm số (1) cắt đường thẳng y=3x+2 tại điểm có hoành độ bằng 5
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