如图,在平面直角坐标系中
为坐标原点
,已知直线
与
轴、
轴分别交于点
、点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/22/b49e3eb2-f285-464f-bd7f-f36d34924170.png?resizew=235)
(1)求直线
的表达式;
(2)设点
为线段
上一点,过点
分别作
轴、
轴,垂足分别为
、
,当
平分
时,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd109d3cea698760b0d5edb65bd6f241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95e84f5c91c910aaafc5e74dbfbdf59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29610a3415c1e795d35979a5a9ff69f3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/22/b49e3eb2-f285-464f-bd7f-f36d34924170.png?resizew=235)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2634263d383b0487281fdcf6fe3cc625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0970cffbe8950fb3a631056dfe91f3a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
更新时间:2022-09-21 15:19:47
|
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解答题-问答题
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适中
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名校
【推荐1】已知,在以为原点的直角坐标系中,抛物线的顶点为
,且经过点
,与
轴分别交于
两点.
(1)求该抛物线的函数表达式;
(2)如图(1),点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(3)如图(2),过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ebef5e61e07825ae56ef0ad653d15aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80934ff67b4ceeaa13b00c029db565dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4d260c4df7b0dc180af6980d21f3371.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
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解答题-证明题
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适中
(0.65)
【推荐1】如图,直线l与x轴交于点A,与一次函数y=﹣
x+5的图象交于点B.点P(a,1)是一次函数y=﹣
x+5图象上的一点,过点P作PD∥x轴,交y轴于点C,交直线l于点D,过点B作BE⊥PD,垂足为E,且∠ABE=∠PBE,PE=6.
(1)求证:△BDE≌△BPE;
(2)求直线l所对应的函数表达式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求证:△BDE≌△BPE;
(2)求直线l所对应的函数表达式.
![](https://img.xkw.com/dksih/QBM/2018/3/31/1914193880309760/1916602189398016/STEM/8f860adf-cc29-411b-9df7-711c6d8fff57.png)
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【推荐2】如图,在平面直角坐标系中,点
,给出如下定义:若P为
内(不含边界)一点,且
与
的一条边相等,则称点P为
的和谐点.
(1)在
中,
的和谐点是_______;
(2)若点P为
的和谐点,且
,求点P的坐标;
(3)直线l为过点
且与x轴平行的直线,若直线l上存在
的二个和谐点,请直接写出m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5128ddcc639f52c06094c528d40c1d21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13af018556f0b484ed38519f2edc791c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b044e1fc58f1da29ddf2fa8413aa5f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/1/c0814f96-7f44-4781-83a6-ac1406971aca.png?resizew=246)
(1)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c97128088afe780220bf1adccc34e7a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
(2)若点P为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff94afb9fd3f3acfbfea20e920cf1d8c.png)
(3)直线l为过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef7fc140ef5775485e53d4042ccc64a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
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解答题-问答题
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【推荐1】如图,在四边形
中,
,连接
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.若
是
边上一动点,则
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【推荐2】如图,点D到
三边的距离相等,连接BD、AD,BD的延长线交AC于点E,
,求
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