如图,在平面直角坐标系中,直线
∶
与x轴交于点A,与y轴交于点B,直线
与直线
交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/27/6f301c2a-6626-425d-a36e-30ff39444050.png?resizew=267)
(1)求直线
的表达式;
(2)点D是直线
上一动点.
①是否存在点D,使得
,若存在,请求出点D的横坐标;若不存在,请说明理由.
②当点D恰好在
的角平分线上时,求直线
的表达式;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bebb3b7f47e0decd48e64cb32aaa5903.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/553c5da0da6ef488dcae0263e9fd933d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/27/6f301c2a-6626-425d-a36e-30ff39444050.png?resizew=267)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)点D是直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
①是否存在点D,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/343aad92bb51ce11f0351615e521c404.png)
②当点D恰好在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22df2977de56cc69be0c1e847653d7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
更新时间:2023-12-10 20:58:02
|
相似题推荐
解答题-问答题
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【推荐1】在平面直角坐标系中,直线
:
与
轴交于点
,与
轴交于点
,与反比例函数
的图像交于点P,且点P的横坐标为3.
(1)求反比例函数的解析式;
(2)求不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70510f3e0e82927f7987a41ed2c1f0ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d105b74c40724a7da626e7c42afbf5fa.png)
(1)求反比例函数的解析式;
(2)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a76cad867d469d1379df929ea981bca.png)
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【推荐2】某水果店购进一批优质晚熟芒果,进价为10元/千克,售价不低于15元/千克,且不超过40元/千克,根据销售情况发现该芒果在一天内的销售量y(千克)与该天的售价x(元/千克)之间满足如表所示的一次函数关系:
![](https://img.xkw.com/dksih/QBM/2020/6/28/2494153473433600/2495040522731520/STEM/8b2f705994284e31838cb0892807caec.png?resizew=554)
(1)写出销售量y与售价x之间的函数关系式;
(2)设某天销售这种芒果获利W元,写出W与售价x之间的函数关系式,并求出当售价为多少元时,当天的获利最大,最大利润是多少?
![](https://img.xkw.com/dksih/QBM/2020/6/28/2494153473433600/2495040522731520/STEM/8b2f705994284e31838cb0892807caec.png?resizew=554)
(1)写出销售量y与售价x之间的函数关系式;
(2)设某天销售这种芒果获利W元,写出W与售价x之间的函数关系式,并求出当售价为多少元时,当天的获利最大,最大利润是多少?
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【推荐1】如图,一次函数
的图象与反比例函数
的图象相交于
,
两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/14/3dab83dd-917b-4dc5-98f8-f1215fd96bde.png?resizew=230)
(1)求一次函数和反比例函数的表达式;
(2)直线
交
轴于点
,点
是
轴上的点,若
的面积是
,求点
的坐标;
(3)当一次函数的值大于反比例函数的值时,
的取值范围为______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05621b18b7ffc991d9f30380e2e08fea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ca979687ffb2214e747525635a6912c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec43a1052208b992850fc6ada35ac84.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/14/3dab83dd-917b-4dc5-98f8-f1215fd96bde.png?resizew=230)
(1)求一次函数和反比例函数的表达式;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/147de24f071e316b68fd2e78e3c84545.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)当一次函数的值大于反比例函数的值时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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【推荐2】如图,在平面直角坐标系中,
为坐标原点,直线
与
轴交于点
,与
轴交于点
,过点
的直线
将
的面积平分
(1)求
的值和点
的坐标;
(2)求
的面积;
(3)求直线
的解析式;
(4)点
是坐标平面内的点,当以
、
、
、
为顶点的四边形是平行四边形时,若该平行四边形的边所在的直线与直线
的交点为
(点
不与点
、
重合),请直接写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/170785d8eaffa7cb618e52c4580e95fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ba33de35567ff6f8c15e7e0d37aa590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b83beedb3438153e6f728545fe3e03.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/8/3192b0d6-9264-4beb-84ff-5eb2ca8b47c8.png?resizew=206)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(4)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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名校
【推荐1】直线
相交于点O,过点O作
.
,求
的度数.
(2)如图(2),作射线
使
,则
是
的平分线.请说明理由.
(3)在图(1)上作
,写出
与
的数量关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da988eac2b646bd694e50e6a58f61c7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a4a26b9ab8f36629aee288b6a0fc77c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89dde9d57a3e7e7a5448408ec2728e9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418ebb89d29f4f631b055c911e8d178a.png)
(2)如图(2),作射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c406c4f1880daebcccf913ba3f93512.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8cfdff83bb92b0acf2737073150ed8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c042ff18466e8165fadf343d142a4b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/843adec8fba1741ccb81a9017cfb815f.png)
(3)在图(1)上作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dfd76d4b9cd52e6f101538689fe1778.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5872ef44ce364d04622e28e1d6f9e39f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/418ebb89d29f4f631b055c911e8d178a.png)
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【推荐2】课题学习:平行线的“等角转化”功能.
已知已知点A是
外一点,连接
.求
的度数,
解:如图1,过点A作
,
∴
,
.
又∵
.
∴
.
阅读理解:
(1)阅读并补充推理过程.
解题反思:从上面的推理过程中,我们发现平行线具有“等角转化”的功能,将
“凑”在一起,得出角之间的关系,使问题得以解决.
(2)方法运用:
如图2,已知
,求证:
.(提示:过点E作
或
的平行线)
(3)深化拓展:
如图3,
,
分别平分
,且所在直线交于点E,
,则
.
已知已知点A是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f6e35511092cd752f4c4ca019d36796.png)
解:如图1,过点A作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14dbafa1565aa5fb728b1b6edc1f8a93.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afde09d82ae96f00c135732baee64776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/459459559720ab5e154a80723c47cc30.png)
又∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8a7a45b202b4227d56801cedfb4f4b2.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64e00e83dfe9194d7ebac8cb4215db1a.png)
阅读理解:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/10/833613b5-dd55-4b5f-b6d5-1355ed8aad49.png?resizew=497)
(1)阅读并补充推理过程.
解题反思:从上面的推理过程中,我们发现平行线具有“等角转化”的功能,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26b4354f527b45dfe0e82531243af49.png)
(2)方法运用:
如图2,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a3ed16c9b461e682f0eed835b40112f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(3)深化拓展:
如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3737fbbd4948565798caaa7015da15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/381c13be9aeff41386cfb8d732f2b872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8881dfbd379ef08e7737d88fc9416923.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa0f4484f901bb727fbeae1a044d714.png)
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【推荐1】如图,P是正三角形内的一点,
,
,
.若将
绕点
逆时针旋转后与
重合,则点
与点
的距离是_____ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a84b7de4bcbaa36f542b7ac3886bba.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c19f0fcacac715a1200770516d1e4a67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbda29fd703fd13e1bf4860d31cc5dbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9c893198d60f9129971aabf596d0ec2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fbfcae2cecc98e2d6c16dde6d3ec1c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef328d61bcf3cece520c35a2ce449ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a84b7de4bcbaa36f542b7ac3886bba.png)
![](https://img.xkw.com/dksih/QBM/2023/9/30/3335787550793728/3345755605213184/STEM/2034704ad995481b8af3d5194f5ecf2d.png?resizew=122)
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【推荐2】如图,在四边形ABCD中,AB=AD=5,BC=12,AC=13,∠ADC=90°.求证:△ABC≌△ADC.
![](https://img.xkw.com/dksih/QBM/2017/12/19/1842028882878464/1842543696355328/STEM/07c0b32bbbc442ebbcb1c9ca7c6f3f95.png?resizew=172)
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