满分5 >
初中数学试题 >
若一次函数y=(2m-1)x+3-2m的图象满足y随x的增大而减小,同时交y轴于...
若一次函数y=(2m-1)x+3-2m的图象满足y随x的增大而减小,同时交y轴于正半轴,则m的取值范围为( )
A.m<2
B.m<
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101192414554316501/SYS201311011924145543165006_ST/0.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101192414554316501/SYS201311011924145543165006_ST/1.png)
m<
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101192414554316501/SYS201311011924145543165006_ST/2.png)
D.m<
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101192414554316501/SYS201311011924145543165006_ST/3.png)
考点分析:
相关试题推荐
已知A(-1,y
1),B(2,y
2)两点在双曲线y=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101192414554316501/SYS201311011924145543165005_ST/0.png)
上,且 y
1>y
2,则m的取值范围是( )
A.m<0
B.m>0
C.m>-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101192414554316501/SYS201311011924145543165005_ST/1.png)
D.m<-
查看答案
正比例函数y=kx(k≠0)的图象经过点(-1,2),并且点A(x
1,y
1),B(x
2,y
2)也在该正比例函数图象上,若x
1-x
2=3,则y
1-y
2的值为( )
A.3
B.-3
C.6
D.-6
查看答案
把不等式组
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101192414554316501/SYS201311011924145543165003_ST/0.png)
的解集表示在数轴上正确的是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101192414554316501/SYS201311011924145543165003_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101192414554316501/SYS201311011924145543165003_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101192414554316501/SYS201311011924145543165003_ST/images3.png)
D.
查看答案
为了相应中共十八大精神,某小区进行“构建节约型社会”的宣传活动,小明为了了解小区居民的月用水量情况,随机抽查了校区15户家庭的月用水量,结果如下:
每户月用水量(吨) | 4 | 6 | 7 | 8 | 10 |
户数(户) | 2 | 5 | 4 | 3 | 1 |
则这组数据的众数和中位数分别为( )
A.6,7
B.6,6
C.10,7
D.10,6
查看答案
如图是由五个小正方体搭成的几何体,它的左视图是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101192414554316501/SYS201311011924145543165001_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101192414554316501/SYS201311011924145543165001_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101192414554316501/SYS201311011924145543165001_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101192414554316501/SYS201311011924145543165001_ST/images3.png)
D.
查看答案