Dina, for months to find a job as a waitress,finally took a position at a local advertising agency.[

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• 将x=23代入反比例函数y=-1x中，所得函数记为y1，又将x=y1+1代入函数中，所得函数记为y2，再持x=y2+1代入函数中，所得函数记为y3，如此继续下去，则y2009值为（）A．2B．-13C
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• 如图，点A在反比例函数y＝(x>0)的图像上，点B在反比例函数y＝－(x<0)的图像上，且∠AOB＝90°，则tan∠OAB（）．A．B．C．D．-九年级数学
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• 反比例函数y1=，y2=（k≠0）在第一象限的图象如图，过y1上的任意一点A，作x轴的平行线交y2于点B，交y轴于点C，若S△AOB=2，则k=_________．-九年级数学
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• （2013年浙江义乌3分）已知两点P1（x1，y1）、P2（x2，y2）在反比例函数的图象上，当x1＞x2＞0时，下列结论正确的是【】A．0＜y1＜y2B．0＜y2＜y1C．y1＜y2＜0D．y2＜y
• 若反比例函数的图象经过点（﹣2，m），则m的值是A．B．C．D．-八年级数学
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• 已知：如图，双曲线的图象经过A（1，2）、B（2，b）两点．（1）求双曲线的解析式；（2）当1<x<2时，反比例函数函数值的取值范围．-八年级数学
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• 某商场出售一批进价为2元的贺卡，在市场营销中发现商品的日销售单价x元与日销售量y个之间有如下关系：x（元/个）3456y（个）20151210（1）根据表中数据，在直角坐标系描出实数对（x，-八年级数