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1、2012-2013 九年级上期中试题一、选择题1、函数 y=xk（k0）的图象过点（2，-2），则此函数的图象在平面直角坐标系中的（）A、第一、三象限 B、第三、四象限 C、A、第一、二象限 D、第二、四象限2、下列各点中，在函数y=x3的图象上的是（）A（3，1）B （3，1）C （31，3）D（3，31）3、反比例函数y=xk(k0)在第一象限内的图象如图，点M是图象上一点，MP垂直 x 轴于点 P，如果 MOP 的面积为1，那么 k 的值是()(A)1 (B)2(C)4 (D)24、如图 138 6 所示，A（1x，1y）、B（2x，2y）、C（3x，3y）是函数xy1的图象在第一象限分
2、支上的三个点，且1x2x3x，过 A、B、C三点分别作坐标轴的垂线，得矩形ADOH、BEON、CFOP，它们的面积分别为S1、S2、S3，则下列结论中正确的是（）AS1S2S3 B S3 S2 S1C S2 S3 S1 D S1=S2=S3 5、反比例函数22)12(mxmy，当 x0 时，y 随 x 的增大而增大，则 m的值时（）A、1 B、小于21的实数 C、1 D、1 6、在同一直角坐标平面内，如果直线1yxk与双曲线2kyx没有交点，那么1k和2k的关系一定是（）A、1k0 B、1k0，2k0 C、1k、2k同号 D、1k、2k异号7、已知点（1x，1y）、（2x，2y）、（3x，3y
3、）是函数xy1的图象上的三个点，且1x2x0，_,21xx满足要求的矩形B存在（2）如果已知矩形A的边长分别为2 和 1，请你仿照小亮的方法研究是否存在满足要求的矩形B文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y
4、5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5
5、R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5
6、I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M
7、9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6
8、I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2
9、P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2x=7/2-y(7/2-y)y=3 y2-7/2y+3=0 2y2-7y+6=0(2y-3)(y
10、-2)=0 x=2,y=3/2 或x=3/2,y=2（3）如果矩形A的边长为m和n，请你研究满足什么条件时，矩形B存在？（4）附加题、如图，在同一平面直角坐标系中画出了一次函数和反比例函数的部分图象，其中x和y分别表示矩形B的两边长，请你结合刚才的研究，回答下列问题：这个图象所研究的矩形A的两边长为 _ _和_ _；满足条件的矩形B的两边长为 _ _和_ _O 文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P
11、5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6
12、M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y
13、6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U
14、2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:C
15、W6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT
16、3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2文档编码:CW6M9Y5B1P1 HT3Y6I5R10K3 ZO6U2P5I1Z2