2022年中考数学微测试系列专题08平面直角坐标系函数及其图像北师大版 .pdf

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1、专题 08 平面直角坐标系、函数及其图像学校：_姓名：_班级：_ 一、选择题：（共4 个小题）1【2015内江】函数121yxx中自变量x的取值范围是（）A2xB2x且1xCx2且1xD1x【答案】B【解析】试题分析：根据二次根式有意义，分式有意义得：20 x且10 x，解得：2x且1x故选 B【考点定位】函数自变量的取值范围2【2015自贡】小刚以 400米/分的速度匀速骑车 5分，在原地休息了 6分，然后以 500米/分的速度骑回出发地下列函数图象能表达这一过程的是（）【答案】C【解析】试题分析：由题意，得：以400米/分的速度匀速骑车 5分，路程随时间匀速增加；在原地休息了6分，路程不变

2、；以 500米/分的速度骑回出发地，路程逐渐减少，故选C【考点定位】1函数的图象；2分段函数3【201 5宜宾】在平面直角坐标系中，任意两点A（1x，1y），B（2x，2y），规定运算：AB=（12xx，12yy）；A?B=1212x xy y；当12xx且12yy时，A=B，有下列四个命题：（1）若A（1，2），B（2，1），则AB=（3，1），A?B=0；（2）若AB=BC，则A=C；（3）若A?B=B?C，则A=C；（4）对任意点A、B、C，均有（AB）C=A（BC）成立，其中正确命题的个数为（）A1个 B2个 C3个 D4个【答案】C【解析】【考点定位】1命题与定理；2点的坐标；3新定

3、义；4阅读型4【2015泸州】在平面直角坐标系中，点A（2，2），B（3 2，3 2），动点C在x轴上，若以A、B、C三点为顶点的三角形是等腰三角形，则点C的个数为（）A2 B3 C4 D5【答案】B【解析】文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX

4、5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码

5、:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3

6、HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10

7、ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档

8、编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y

9、3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9【考点定位】1等腰三角形的判定；2坐标与图形性质；3分类

10、讨论；4综合题；5压轴题二、填空题：（共4 个小题）5【2015 广元】若第二象限内的点P（x，y）满足3x，225y，则点P的坐标是 _【答案】（3，5）【解析】试题分析：3x，225y，x=3，y=5，P在第二象限，点P的坐标是（3，5）故答案为：（3，5）【考点定位】点的坐标6【2015 六盘水】观察中国象棋的棋盘，其中红方“马”的位置可以用一个数对（3，5）来表示，红“马”走完“马3 进四”后到达B点，则表示B点位置的数对是：文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V

11、9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4

12、O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V

13、8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B

14、1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8

15、M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U

16、4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P

17、9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9【答案】（2，7）【解析】试题分析：建立平面直角坐标系如图所示，点B的坐标为（2，7）故答案为：（2，7）【考点定位】坐标确定位置7【2015甘孜州】如图，正方形A1A2A3A4，A5A6A7A8，A9A10A11A12，（每个正方形从第三象限的顶点开始，按顺时针方向顺序，依次记为A1，A2，A3，A4；A5，A6，A7，A8；A9，A10，A11，A12；）的中心均在坐标原点O，各边均与x轴或y轴平行，若它们的边长依次是

18、2，4，6，则顶点A20的坐标为【答案】（5，5）【解析】文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V

19、8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B

20、1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8

21、M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U

22、4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P

23、9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8

24、L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9试题分析：204=5，A20在第二象限，A4所在正方形的边长为 2，A4的坐标为（1，1），同理可得：A8的坐标为（2，2），A12的坐标为（3，3），A20的坐标为（5，5），故答案为：（5，5）【考点定

25、位】1规律型：点的坐标；2规律型；3综合题8【2015 资阳雁江区中考适应】如图，在正方形ABCD中，点P沿边DA从点D开始向点A以 2cm/s的速度移动；同时，点Q沿边AB、BC从点A开始向点C以 3cm/s的速度移动 当点P移动到点A时，P、Q同时停止移动设点P出发x s时，PAQ的面积为ycm2，y与x的函数图像如图2 所示，则线段EF所在的直线对应的函数关系式为【答案】y=-3x+18【解析】【考点定位】1动点问题的函数图象；2动点型；3综合题三、解答题：（共2 个小题）9【2015 丹棱县一诊】如图，方格纸中的每个小方格都是边长为1 个单位长度的正方形，ABC的顶点都在格点上，建立平

26、面直角坐标系（1）点A的坐 标为，点C的坐标 为（2）将ABC向左平移7个单位，请画出平移后的111CBA，若M为ABC内的一点，其坐标为（a，b）则平移后点1M的坐标为文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8

27、M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U

28、4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P

29、9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8

30、L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I

31、7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B

32、7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9（3）以原点O为位似中心，将ABC缩小，使变换后的222CBA与ABC对应边的比为1：2，请在

33、网格内画出一个222CBA，则2A的坐标为【答案】（1）A（2，7），C（6，5）；（2）作图见解析；（3）作图见解析【解析】（2）平移后的A1B1C1如图所示：M为ABC内的一点，其坐标为（a，b），ABC向左平移了7 个单位，平移后点M的对应点M1的坐标为M1（a-7，b）（3）如图所示：A2B2C2为所求文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I

34、7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B

35、7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:C

36、M8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO

37、8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX

38、5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码

39、:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3

40、HO8I7U4V8H10 ZX5B7P9B1V9【考点定位】1作图-平移变换；2作图-位似变换10【2015黔西南州】某地为了鼓励居民节约用水，决定实行两级收费制，即每月用水量不超过 12吨（含 12吨）时，每吨按政府补贴优惠价收费；每月超过12吨，超过部分每吨按市场调节价收费，小黄家1月份用水 24吨，交水费 42元2月份用水 20吨，交水费 32元（1）求每吨水的政府补贴优惠价和市场调节价分别是多少元；（2）设每月用水量为x吨，应交水费为y元，写出y与x之间的函数关系式；（3）小黄家 3月份用水 26吨，他家应交水费多少元？【答案】（1）每吨水的政府补贴优惠价为1元，市场调节价为2.5 元

41、；（2）(012)2.518(12)xxyxx；（3）47【解析】答：每吨水的政府补贴优惠价为1元，市场调节价为 2.5 元（2）当 0 x12时，y=x；当x12时，y=12+（x12）2.5=2.5x18，所求函数关系式为：(012)2.518(12)xxyxx；文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档

42、编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y

43、3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H1

44、0 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9

45、文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O

46、3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8

47、H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1

48、V9（3）x=2612，把x=26代入y=2.5x18，得：y=2.52618=47（元）答：小英家三月份应交水费47元【考点定位】1一次函数的应用；2分段函数；3分类讨论文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L

49、8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7

50、U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7P9B1V9文档编码:CM8L8M4O3Y3 HO8I7U4V8H10 ZX5B7