下列表格中的关于
,
的两组对应值,满足一次函数
.如图,一次函数
图象是直线
,
交
轴于点
,将上面函数中的
与
交换位置后得另一个一次函数,设其图象为直线
,
与
轴交于点
.
![](https://img.xkw.com/dksih/QBM/2021/1/22/2641727286484992/2646113488576512/STEM/cee0ba32-60ea-4d6f-a799-6f935b54c5a9.png?resizew=209)
(1)求 直线
的函数表达式,并直接写出 直线
的函数表达式;
(2)直线
与直线
,
分别交于点
,
.
①当
,求
的值和点C的坐标;
②点
是直线
上一点,连接
,
,直接写出
周长的最小值(用含
的代数式表示)
![](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/0e114459637a3db306e91b5e9ee9aae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e114459637a3db306e91b5e9ee9aae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dea1bd3d0dd84b8b6f6ff634c5600c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dea1bd3d0dd84b8b6f6ff634c5600c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/2021/1/22/2641727286484992/2646113488576512/STEM/cee0ba32-60ea-4d6f-a799-6f935b54c5a9.png?resizew=209)
![]() | …… | -1 | 0 | …… |
![]() | …… | -2 | 1 | …… |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dea1bd3d0dd84b8b6f6ff634c5600c.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f7b16d65f1b2b8bea8cf4a83fde925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dea1bd3d0dd84b8b6f6ff634c5600c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f1161e0345b3646c71365430dccbb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
②点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f7b16d65f1b2b8bea8cf4a83fde925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004104bafb5f30338123d4ea2b7fedde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
更新时间:2021-01-28 23:14:35
|
相似题推荐
解答题-问答题
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适中
(0.65)
【推荐1】如图,一次函数
的图象与正比例函数
的图象交于点
,与
轴交于点
,与
轴交于点
,
,点
的纵坐标为4.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/28/84695896-ebac-48ff-9a33-f8934004dbd4.png?resizew=200)
(1)求一次函数的解析式;
(2)点
和点
关于
轴对称,将直线
沿
轴向上平移8个单位后分别交
轴,
轴于点
,与直线
交于点
,连接
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ececd20089801c2228b63367418703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4407788e4dc88210bca71a2551d4f2f9.png)
![](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/c5db41a1f31d6baee7c69990811edb9f.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/8b42602dabcdc7bdaba0ee0af37d71f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/28/84695896-ebac-48ff-9a33-f8934004dbd4.png?resizew=200)
(1)求一次函数的解析式;
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4407788e4dc88210bca71a2551d4f2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ececd20089801c2228b63367418703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】在平面直角坐标系xOy中,一次函数y=kx+b(k≠0)的图象由函数y=﹣2x的图象平移得到,且经过点(﹣1,4)与直线
相交于点P.直线
和直线y=kx+b(k≠0)分别与x轴交于点A,B.
(1)①求这个一次函数的解析式;
②求交点P的坐标;
③求△PAB的面积;
(2)请直接写出图象中直线y=kx+b(k≠0)在直线
下方的部分所对应的自变量x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5f914ffd23625e3571870ed513dad07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5f914ffd23625e3571870ed513dad07.png)
(1)①求这个一次函数的解析式;
②求交点P的坐标;
③求△PAB的面积;
(2)请直接写出图象中直线y=kx+b(k≠0)在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5f914ffd23625e3571870ed513dad07.png)
![](https://img.xkw.com/dksih/QBM/2021/8/31/2797764889681920/2798032670646272/STEM/757eee097a3e4fda874c31755072b0b0.png?resizew=220)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐1】已知点A(2,0),B(2,2)和C(3,1),判断
的形状,并求出
的面积.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐2】如图,在平面直角坐标系中,抛物线
交
轴于点
,且过点
,
.
(2)求
的面积;
(3)将抛物线向左平移
个单位,当抛物线经过点B时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d8de071a9c22c96a59b172d76c127e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40fb1bbe5783d8246238a960afb6afb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6dfd3d55a8807342b3fe7eb939f54cc.png)
(2)求
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(3)将抛物线向左平移
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-作图题
|
适中
(0.65)
【推荐1】已知△ABC在平面直角坐标系中的位置如图所示:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/17/d1bbfb47-f619-48c1-98ae-45a360cf1900.png?resizew=249)
(1)画出△ABC关于y轴对称的△AB1C1;并写出B1的坐标;
(2)将△ABC向右平移8个单位,画出平移后的△A1B2C2,并写出B2的坐标;
(3)在(1)、(2)的基础上,写出△AB1C1与△A1B2C2有怎样的位置关系?
(4)在y轴上有一点P,使得PB+PC最小,请画出点P;(用虚线保留画图的痕迹)
(5)在y轴上有一点Q,使得QB-QC最大,请画出点Q.(用虚线保留画图的痕迹)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/17/d1bbfb47-f619-48c1-98ae-45a360cf1900.png?resizew=249)
(1)画出△ABC关于y轴对称的△AB1C1;并写出B1的坐标;
(2)将△ABC向右平移8个单位,画出平移后的△A1B2C2,并写出B2的坐标;
(3)在(1)、(2)的基础上,写出△AB1C1与△A1B2C2有怎样的位置关系?
(4)在y轴上有一点P,使得PB+PC最小,请画出点P;(用虚线保留画图的痕迹)
(5)在y轴上有一点Q,使得QB-QC最大,请画出点Q.(用虚线保留画图的痕迹)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,一次函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89c1972246a0a3d1c987d25205dbdd99.png)
的图象与反比例函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
的图象交于第二、四象限内的点
和点
.过点
作x轴的垂线,垂足为点
,
的面积为3
(1)分别求出一次函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89c1972246a0a3d1c987d25205dbdd99.png)
与反比例函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
的表达式;
(2)结合图象直接写出
的解集;
(3)在x轴正半轴上取点
,使
取得最大值时,求出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89c1972246a0a3d1c987d25205dbdd99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf69ee633c231650ec8be8c634b7966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3cb77304ba3546c1fc629832f1b811f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/188432484e5072404b3b4d0791edf35d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1e637551a8ebfc4842f2cc5c5f379be.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/2bbf9680f74a9ac5d934304654ce2771.png)
(1)分别求出一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89c1972246a0a3d1c987d25205dbdd99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf69ee633c231650ec8be8c634b7966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3cb77304ba3546c1fc629832f1b811f.png)
(2)结合图象直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74b566357a86b90af08fe3959f76f49b.png)
(3)在x轴正半轴上取点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357503e7cc52186f81ff67b38c5dd763.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/22/4f48ebe0-6dbf-40b3-8141-0e976c526c77.png?resizew=256)
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