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1、中考压轴题之中考压轴题之 反比例函数反比例函数1、 （常州）已知与是反比例函数( 1)Am ，(23 3)Bm，图象上的两个点kyx（1）求的值；k（2）若点，则在反比例函数图象上是否存在点，( 10)C ，kyxD使得以四点为顶点的四边形为梯形？若存在，求出ABCD， 点的坐标；若不存在，请说明理由D2、 （福州）如图，已知直线与双曲线交于两点，且点的横1 2yx(0)kykxAB，A坐标为4（1）求的值；k（2）若双曲线上一点的纵坐标为 8，求的面积；(0)kykxCAOC（3）过原点的另一条直线 交双曲线于两点（Ol(0)kykxPQ，点在第一象限） ，若由点为顶点组成的四边形面积为PA
2、BPQ，求点的坐标24P3、 （芜湖）已知圆 P 的圆心在反比例函数图象上，并与 x 轴相交于 A、B 两kyx(1)k 点 且始终与 y 轴相切于定点 C(0，1) (1) 求经过 A、B、C 三点的二次函数图象的解析式; (2) 若二次函数图象的顶点为 D，问当 k 为何值时，四边形 ADBP 为菱形OxAyB全员参与型 生产保全9JWKffwvG#tYM*Jg&6a*CZ7H$dq8KqqfHVZFedswSyXTy#&QA9wkxFyeQ!djs#XuyUP2kNXpRWXmA&UE9aQGn8xp$R#͑GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum
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