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hoaingan2910
2 năm trước
Xác định hệ số a và b của đường thẳng y = ax +b (d') , biết đồ thị của nó song song với đường thẳng y= -1/2x - 3 (d) và đi qua điểm. A (-2;3) Mọi ng giúp e vs ạ !!
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