若反比例函数y＝的图象经过点(2，－1)，则该反比例函数的图象在( )

若反比例函数y＝的图象经过点(2，－1)，则该反比例函数的图象在(　　)

A．第一、二象限 B．第一、三象限

C．第二、三象限 D．第二、四象限

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若反比例函数y＝的图象经过点(2，－1)，则该反比例函数的图象在( )

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