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Mathematics, 29.11.2021 21:50 cancerbaby209
Cho biết x và y là đại lượng tỉ lệ thuận và biết rằng hai giá trị y1,y2 của y có tổng bằng -1,5 thì tổng hai giá trị tương ứng x1 và x2 của x có tổng bằng -1
a) hãy viết công thức liên hệ của y và x
b) hãy điền vào các ô trống của bảng sau đây các số thích hợp
x -1 2 3
y
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Cho biết x và y là đại lượng tỉ lệ thuận và biết rằng hai giá trị y1,y2 của y có tổng bằng -1,5 thì...
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