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phuongnam26
2 năm trước
bài 1 cho hàm số y=4/5x. a, Vẽ đồ thị hàm số b, tìm giá trị của hàm số tại x=-1, x=0 c, tìm điểm trên đồ thị có tung độ là 4. bài 2 cho hàm số y =-2/5x a) vẽ đồ thị hàm số b)trong các điểm sau đây thì điểm nào thuộc đô thị hàm số đó : M (-5 ;2) , N (0;3) , p(3 ; -1 1/5) -------------(-1 1/5 là hỗn số) Bài 3 điểm B (2;-1)thuộc đồ thị hàm số y=ax a) xác định a b) vẽ đồ thị hàm số vừa tìm được
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