1 . 定义:对于一次函数
、
,我们称函数
为函数
、
的“组合函数”.
(1)若函数
为函数
的“组合函数”,求
的值;
(2)设函数
与
的图像相交于点
.
①若
,函数
的“组合函数”图像经过点
,求
的值;
②若
,点
在函数
的“组合函数”图像的上方,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715416015a9634f5eafe3d399987d837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d11983799c973e41ae27f5f2851195f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf3cd8d1776341b98631bbf8f8615236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85a4c9952d19bf0a44ae89246a85a742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bebd4bb79cbb4392c55cc60e6e26589f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90b4ee699a0e3c8d5fafe42d340bccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071bff9e38bf836ca7c00af6ed63b474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea7e0ac16c02bd211e9926c44e50334.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9724cf149ccc974596673c8aaae9558f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd1f0ace9ca0b79929e73af6c201c2e.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/719c2f93421097262b3c5ea624737189.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9724cf149ccc974596673c8aaae9558f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
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名校
2 . 一次函数
(
)的图像过点
,则不等式
的解集是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e10eb41754e40597840588d0ae13dd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b25f4bfe3cf28e2172b28f2e28f1b68.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-01-25更新
|
325次组卷
|
5卷引用:江苏省无锡市宜兴市桃溪中学2023-2024学年九年级下学期第一次月考数学试题
江苏省无锡市宜兴市桃溪中学2023-2024学年九年级下学期第一次月考数学试题安徽省马鞍山市第七中学2023-2024学年八年级上学期期末数学试题2024年陕西省西安市西安高新第一中学中考二模数学试题2024年陕西省渭南市富平县中考一模数学试题(已下线)第06讲 一次函数与方程、不等式(3个知识点+3类热点题型讲练+习题巩固)-【帮课堂】2023-2024学年八年级数学下册同步学与练(人教版)
3 . 正比例函数
和一次函数
的图像交于点
,且一次函数的图像交
轴于点
,交
轴于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/28/fa6024f0-5ece-4fd2-9f89-4e315fda501a.png?resizew=137)
(1)求正比例函数和一次函数的表达式;
(2)利用图像,求关于
的不等式
的解集;
(3)将正比例函数图像平移到经过点
,此时新的函数图像交
轴于点
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac02a054bd0771a56987af33454baaea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e136e7637543c8ae92c8dcd55b31924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4e49a2b10819104f71a8b4c55d57066.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56c53a3db1c5e56df936174633faae92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/28/fa6024f0-5ece-4fd2-9f89-4e315fda501a.png?resizew=137)
(1)求正比例函数和一次函数的表达式;
(2)利用图像,求关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b50fdbf8c0d28ac26552559eee2300e.png)
(3)将正比例函数图像平移到经过点
![](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/73636989e83905f8800a865c2b608c43.png)
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4 . 已知一次函数
与一次函数
中,函数
、
与自变量
的部分对应值分别如表1、表2所示:
表1:
表2:
则关于
的不等式
的解集是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c32bdabb0e3b9f223fcfe4dfaea7741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dff753b5f813cb7ff8f9a2b4f4d992a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
表1:
… | … | ||||
… | 0 | … |
… | 1 | … | |||
… | 0 | … |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d726b3d0154ad30381e4bfa0d7d6d39.png)
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5 . 如图,数轴上点
表示的数分别为
,
两点之间的距离记为
.结合对变量的理解,解决下列问题.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/0761a9ae-07c8-4406-a298-aa9d41876ff1.png?resizew=311)
(1)当
时,
;
当
时,
;
;
进一步发现
是x的函数,函数表达式为
;
(2)在平面直角坐标系中,画出y1与x的函数图像,并写出该函数图像的两条不同类型的性质;
(3)在上述平面直角坐标系中,存在正比例函数
,当
和
时,
都大于
.结合图像,直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c834cece17438b5741fa36a558ccf15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/0761a9ae-07c8-4406-a298-aa9d41876ff1.png?resizew=311)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba53065eb180a682305fddb95d14b62f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30f6ae805e69e5c04728f976047dad58.png)
当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cddd12c8de0531b546adc60be332e37a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa5e9bd516f6282483b92cfe6074623.png)
进一步发现
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30f6ae805e69e5c04728f976047dad58.png)
(2)在平面直角坐标系中,画出y1与x的函数图像,并写出该函数图像的两条不同类型的性质;
(3)在上述平面直角坐标系中,存在正比例函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29a33e4132decf7ed63e36a95ea9081a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ccaa6e503b61e9ae78d8439cba2e328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752455799e49f846e2601304fec5d3b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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6 . 如图,直线
的函数表达式为
,且
分别交x轴、y轴于点A,B.直线
的函数表达式为
,
经过点
,分别交x轴、直线
于点D,E,且E点坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/13/d945737f-5e0d-46f6-8c12-cbf7c713f236.png?resizew=203)
(1)求k和b的值;
(2)求
的面积;
(3)直接写出不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab466aedd6e176088d8dee7bc3e3aaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93baecff5b19775b8edec5e045010237.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95d76c033a5ba7fb9c8939e879356cff.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/13/d945737f-5e0d-46f6-8c12-cbf7c713f236.png?resizew=203)
(1)求k和b的值;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
(3)直接写出不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96ec2e906c3f0420cf0cff95d6f7aee3.png)
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7 . 如图,直线
与直线
相交于点
.
(1)求
的值;
(2)直接写出关于
的不等式
的解集;
(3)垂直于
轴的直线
与直线
分别交于点C,D.若线段
长为2,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc2895c0affcb5a43c53f14d97211bbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fd1ce56fb4cb1e4f42310898b560b5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6475fbe89a9f73b993466680f7176f5b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/a3663753-a60b-4581-8a30-a38eb3b56d1c.png?resizew=186)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c355d1608d8fcbe4cce14cadd5dde8f.png)
(2)直接写出关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a23dd86803bca91022d42a4359cd4f28.png)
(3)垂直于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b53b86bd516400d6fa7dabb3603f31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2024-04-02更新
|
392次组卷
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2卷引用:江苏省淮安市淮安经济技术开发区开明中学2023-2024学年八年级上学期练习试题
8 . 如图,点A、B的坐标分别为
,直线
与坐标轴交于C、D两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/1/c989ffae-288d-473d-a3ee-d15a43959967.png?resizew=177)
(1)求交点E的坐标;
(2)直接写出不等式
的解集;
(3)求四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c6c33e673ff740206bc6bb4e2baff9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d73ecfaeac5db3976fe465b6f3ea977e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/1/c989ffae-288d-473d-a3ee-d15a43959967.png?resizew=177)
(1)求交点E的坐标;
(2)直接写出不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe30266cc830ff6653125583209598c.png)
(3)求四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8980102bfb8611a14e79d7456c7e2301.png)
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9 . 如图,直线
与直线
交于点
,则关于x的不等式
的解集是____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07565f10847840e0fb07b05218ad17fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/170785d8eaffa7cb618e52c4580e95fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3f775813f526470cc4ffa5b4a807e31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e51a10aa6e99f6752166952b8c1dea06.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/27/2915f465-fcc4-4e81-baef-1e9816d4796f.png?resizew=200)
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名校
10 . 如图,已知一次函数
的图象经过点
和点
,一次函数
的图象经过点
,则关于
的不等式组
的解集为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6acf45a5f66394502b70bf1dd68ee40b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/428426e7f2ee0502b555a87a5cef6cb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cca39b30b0b8e769293e13546b91f35.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/14364c48abedc0f8e13515b9a96418ff.png)
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4卷引用:2023年江苏省徐州市中考数学模拟预测题
2023年江苏省徐州市中考数学模拟预测题(已下线)专题19.16 一次函数与方程、不等式(知识梳理与考点分类讲解)-2023-2024学年八年级数学下册基础知识专项突破讲与练(人教版)(已下线)专题19.39 一次函数常考核心知识点分类专题(分层练习)(基础练)-2023-2024学年八年级数学下册基础知识专项突破讲与练(人教版)陕西省西安市碑林区铁一中2023-2024学年八年级下学期第二次月考数学试题