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【332178】【推荐】26.1.2 反比例函数的图象和性质-同步练习(4)B

时间:2025-01-21 12:26:18 作者: 字数:4243字
简介:

26.1.2 反比例 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 函数的图像和性质(1)同步练习

课内同步精练

A基础练习

1.反比例函数 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 的图象在(

A.第一、三象限 B.第一、二象限 C.第二、四象限 D.第三、四象限

2.若函数 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 的图象在第一、三象限,则函数y=kx-3的图象经过( )

A.第二、三、四象限  <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> B.第一、二、三象限 C.第一、二、四象限 D.第一、三、四象限

3.若反比例函数 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 的图象在第二、四象限,则 m 的取值范围是 .[来源:++]

4.反比 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 例函数 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 的图象的两个分支关于 对称.

5.某个反比例函数的图象如图所示,根据图象提供的信息,求反比例函数的解析式.


 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a>





[来源:Zxxk.Com]

B组 提高训练

6. 画出反比例函数 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 的图象.






[来源:学科网ZXXK]




7 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> .如图是反比例函数 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 的图象在第一象限的部分曲线,P为曲线上任意一 点,PM垂直x轴于点M,求△OPM的面积(用k的代数式表示). <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a>







课外拓展练习

A组 基础练习

1.反比例 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 函数, <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 的共同点是(

A.图象位于同样的象限  <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a>  <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> B.自变量取值范围是全 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 体实数 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a>

C.图象关于直角坐标系的原点成中心对称. D.yx的增大而增大

2.以下各图表示正比例函数y=kx与反比例函数 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 的大致图象,其中正确的是(

组合 1148



[来源:学科网]




3.反比例函数 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 经过(-3, 2),则图象在 象限.

4.若反比例函数 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 图像位于第一、三象限,则k .

5若反比例函数图象经过(-1, 2 ),试问点(4,-2)是否在这个函数的图象上?为什么?







B组 提高训练

6.老师在同一 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 直角坐标系中画了一个反比例函数的图象以及正比例函数y=-x的图象,请同学们观 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 察,并说出来.同学甲:与直线y=-x有两个交点;同学乙:图象上任意一点到两坐标轴的距离的积都为5.请根据以上信息,写出反比例函数的解析式.












26.1.2反比例函数的图像和性质(2)同步练习

课内同 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 步精练

A组 基础练习


1.下列函数中,yx的增大而减小的有(

 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a>  <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a>

A.2 B.3 C.4 D.5

2.若点(-2y1), ( 1y <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 2), ( 2y3)都在反比例函数, <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 的图象上,则有

 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a>  <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a>

3.已知函数 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 的图象与直线y=x-1都经过点

-2, m ),则m= k= .

4.如图,点P是反比例函数y= <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 图象上一点,PM x轴于M,则△POM

的面积为 .

5.已知一次函数图象与反比例函数图象 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 交于点(-1, m ),且过点(0-3),求一次函数的解析式.







B组 提高训练

6.已知反比例函数 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 的图象经过点A(-2,3)

(1)求出这个反比例函数的解析式;

(2)经过点A的正比例函数y=k1x的图象与反比例函数 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 的图象还有其他交点吗?若有,求出交点坐标;若没有,说明理由.






课外拓展练习

A组 基础练习


1.若反比例函数 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 的图象经过(nn),则x的值是(

A.±2 B. <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> C. <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> D. <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a>

2.若点(-2y1), (1y2), ( 2,y3)都在反比例函数, <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 的图象上,则下列结论正确的是

 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a>

3. 若反比例函数 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 的图象经过点A (x1,y1) 和点Bx2, y2 ),且0x1x2时,y1y2>0,

m的取值范围是 ( )

A.m<0 B.m>0 C.m< <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a>  <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> D.m> <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> [来源:Zxxk.Com]

4.函数y= <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 的图象在第 象限内,在每一个象限内,曲线从左向右 .

5.函数y=- <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 的图象在第 象限内,在每一个象限内,y x的增大而 .

6.任写一个图象在每一 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 个象限内yx增大而增大的反比例函数关系式: .

B组 提高训练

7.已知反比例函数y= <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> 的图象与一次函数y=kx+b交于点(-2, 3 ),分别求出该反比例函数与一次函数的表达式.






8. 已知 <a href="/tags/48/" title="练习" class="c1" target="_blank">练习</a> <a href="/tags/50/" title="同步" class="c1" target="_blank">同步</a> <a href="/tags/145/" title="推荐" class="c1" target="_blank">推荐</a> <a href="/tags/386/" title="性质" class="c1" target="_blank">性质</a> <a href="/tags/411/" title="反比例" class="c1" target="_blank">反比例</a> <a href="/tags/885/" title="函数" class="c1" target="_blank">函数</a> ,利用反比例函数的增减性,求当x-2.5时,y的取值范围.