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【OG20-P156-68题】
The graph of the equation xy = k, where k < 0, lies in which two of the quadrants shown above?
分析A选项
分析B选项
分析C选项
分析D选项
分析E选项
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题目：如图方程式xy=k，其中k<0，问方程式经过哪个象限。
解：xy=k，k<0，也就是说x和y符号相异，因此双曲线xy=k经过二、四象限，答案为D。
大壮
这个是反比例函数 不是双曲线
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2021-01-09 19:21:37
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