如图,一次函数
的图像与反比例函数y
的图像交于如下两点:A(3,1),B(-1,n)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/15/bbf47d34-8f0c-45fe-9ce7-2b90e3b9d120.png?resizew=201)
(1)求一次函数与反比例函数的表达式;
(2)根据图像,满足不等式
的x的取值范围为______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ed28036b90c7acaa9429ba21feba22.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/15/bbf47d34-8f0c-45fe-9ce7-2b90e3b9d120.png?resizew=201)
(1)求一次函数与反比例函数的表达式;
(2)根据图像,满足不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baf2d21926a454061f49c0cbaccea977.png)
21-22八年级下·江苏徐州·期末 查看更多[3]
更新时间:2022-07-12 15:41:13
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解答题-问答题
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适中
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【推荐1】如图,矩形
的顶点
、
分别位于
轴和
轴的正半轴上,线段
、
的长度满足
,点
在
上,将
沿直线
折叠,点
恰好落在
轴上的点
处,且
.
(2)求直线
的解析式;
(3)坐标平面内是否存在一点P,使以B、N、D、P为顶点的四边形是平行四边形?若存在,请直接写出点P的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e3fa43e765646223675ef9bbd6d2f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d8a731f1247738c195d00176aef788d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc1275768bdac801185ef152290a85ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78691dacfa00dd2448b1ba94b264ec8b.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
(3)坐标平面内是否存在一点P,使以B、N、D、P为顶点的四边形是平行四边形?若存在,请直接写出点P的坐标;若不存在,请说明理由.
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【推荐2】在平面直角坐标系中,点
,
,
,
,点E为AD与网格线的交点,仅用无刻度的直尺在给定的网格中完成画图,画图过程用虚线表示,并回答下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/ba387a0c-6341-4943-93f6-70a8d0b3d22c.png?resizew=277)
(1)四边形ABCD的周长为______;
(2)在BC上找点F,使BF=DE;
(3)在CD上找点G,使DG=DE;
(4)在AB边上找点H,使得四边形EGFH为矩形,请直接写出点H的坐标______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9112bdf193400278a319ebd904d0f73e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2a0c9b6c7111bd1072b0a779e5c190.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a523e6d4905c9a23b6ae6e430387b1ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ccbbfa63b7770cc37226133848dcccd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/ba387a0c-6341-4943-93f6-70a8d0b3d22c.png?resizew=277)
(1)四边形ABCD的周长为______;
(2)在BC上找点F,使BF=DE;
(3)在CD上找点G,使DG=DE;
(4)在AB边上找点H,使得四边形EGFH为矩形,请直接写出点H的坐标______.
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【推荐1】如图,在平面直角坐标系
中,函数
的图象与函数
的图象相交于点
,并与
轴交于点B.点C是线段
上一点,
的面积是
面积的一半.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/2f6842a8-a187-4fa3-9875-63d168ac0aa7.png?resizew=260)
(1)
,
;
(2)求点
的坐标;
(3)若将
绕点
顺时针旋转,得到
,当点
正好落在
轴正半轴上时,判断此时点
是否落在函数
的图象上,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54479885d4ab2f717d2e97718da04b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03517310ea1e913f709753592ac65ffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/414c11d003bcc54ad2fc51dde1d18c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/173bc7a36757d77f01213411edd25241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7ffcd1925a2b1259221c6a476152f7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/2f6842a8-a187-4fa3-9875-63d168ac0aa7.png?resizew=260)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(3)若将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7ffcd1925a2b1259221c6a476152f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/956f9fd0d857a2120739ae3ef7676f03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03517310ea1e913f709753592ac65ffd.png)
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【推荐2】如图,一次函数
的图象与反比例函数
在第一象限的图象有一交点
.求a的值及反比例函数的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812eed46a589bde8b7c78a81a8cf9b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45bd7e92dae1e0c2af6c33d5e202f544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e1648b49ceefcffbc3f79f64e5451.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/3/d8659944-fba2-41cd-ae14-0c96ee6dc22d.png?resizew=129)
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【推荐1】设函数
,函数
(
,
,b是常数,
,
),函数
和函数
的图象交于点
,点
,
(1)求函数
,
的表达式;
(2)结合函数的图象分析,当
时,直接写出x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a249a4460b4edd504ae4dfecccd032bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0bb22b9722cbbca2802610d6e58554e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5343f6dee6d12906b09ff03166350a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49a31f8e8dba418bd5d886998ef8d17.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
(2)结合函数的图象分析,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99508de16dec79f7cc1b9e82a67cfe1b.png)
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【推荐2】如图,在平面直角坐标系xOy中,已知正比例函数y1=﹣2x的图象与反比例函数y2=
的图象交于A(﹣1,n),B两点.
(1)求出反比例函数的解析式及点B的坐标;
(2)观察图象,请直接写出满足y2≤2的取值范围;
(3)点P是第四象限内反比例函数的图象上一点,若
POB的面积为1,请直接写出点P的横坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abb3a62e46296c417261156b51ec6b4.png)
(1)求出反比例函数的解析式及点B的坐标;
(2)观察图象,请直接写出满足y2≤2的取值范围;
(3)点P是第四象限内反比例函数的图象上一点,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://img.xkw.com/dksih/QBM/2021/12/2/2863619214196736/2866707128139776/STEM/ebab53d3-f1f0-4c6b-86b7-98967db4cf97.png?resizew=151)
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名校
【推荐3】探究函数性质时,我们经历了列表、描点、连线画函数图象,观察分析图象特征,概括函数性质的过程,以下是我们研究函数
性质及其应用的部分过程,请按要求完成下列各小题.
(1)写出函数关系式中k及表格中a,b的值:k= ,a= ,b= ;
(2)在给出的图中补全该函数的大致图象,并根据图象写出该函数的一条性质: ;
(3)已知函数
的图象如图所示,结合你所画的函数图象,直接写出不等式y1<y2的解集: .(近似值保留一位小数,误差不超过0.2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c6df2ec2d17c11dd18ba218416593eb.png)
x | … | ﹣9 | ﹣8 | ﹣7 | ﹣6 | ﹣5 | ﹣4 | ﹣3 | ﹣2 | ﹣1 | 0 | 1 | 2 | 3 | … |
y | … |
| ﹣2 |
| 4 |
| a |
| 4 |
| 2 |
| b |
| … |
(2)在给出的图中补全该函数的大致图象,并根据图象写出该函数的一条性质: ;
(3)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8c89ac03811bc4fe2b8a8b1850c451a.png)
![](https://img.xkw.com/dksih/QBM/2021/12/28/2882493238845440/2883664804659200/STEM/d1632b2f-0048-472d-a894-5685af1bb39c.png?resizew=398)
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【推荐1】如图,已知
是一次函数
和反比例函数
的图象的两个交点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/17/16530b5b-a438-4aa0-a97c-3513d9d5c123.png?resizew=236)
(1)求反比例函数和一次函数的解析式;
(2)求方程
的解是 ;(请根据图象直接写出答案)
(3)求不等式
的解集即当一次函数的值小于反比例函数的值时x的取值范围是 ;(请根据图象直接写出答案)
(4)求直线
和x轴的交点C的坐标及
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1bd99d825754fe58f9ac610c400af1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cf3480b826532a8c60dc7098f069576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05621b18b7ffc991d9f30380e2e08fea.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/17/16530b5b-a438-4aa0-a97c-3513d9d5c123.png?resizew=236)
(1)求反比例函数和一次函数的解析式;
(2)求方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f54bd5c51b58932ffe1b6bddff5d9426.png)
(3)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a4b1b2e12b2a0d78b93cd8d6647b81e.png)
(4)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a9354a07397b21c33820fc2590e814.png)
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【推荐2】如图,动点M在函数
的图象上,过点M分别作x轴和y轴的平行线交反比例函数
的图象于点B、C,作直线
,设直线
的函数表达式为
.
(1)若点M的坐标为
,①求直线
的函数解析式;②点D在x轴上,点E在y轴上,且以点B、C、D、E为顶点的四边形是平行四边形,请直接写出点D、E的坐标;
(2)连接
,试探究点M在运动过程中,
的面积是否是定值?若是,求出该定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4115c4fbc17d33752e8273a168d4689.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3b8a183696731ea6e8878739f0eca2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5d501afbd7542f2f724b658edf39af4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/11/3e8b8b7b-7013-4ea8-8f77-8abf0756b97b.png?resizew=177)
(1)若点M的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a58d99ee4f2d7d8071c2e93eeadf9734.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4d9e43d7805cccb25d290321ee73f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7ffcd1925a2b1259221c6a476152f7.png)
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