1 . 在数学学习中,及时对知识进行归纳和整理是改善学习的重要方法,善于学习的小明在学习了一次方程(组),对相关知识进行了归纳整理.
![](https://img.xkw.com/dksih/QBM/2024/3/27/3462835785482240/3463432438775808/STEM/fd329225ab23496e9b97b78b36a24f1c.png?resizew=306)
(1)如他在同一个直角坐标系中画出一次函数
和
的图象(图1),并归纳:
请根据图1和以上方框中的内容,在下面数字序号后写出相应的结论:① ;② ;③ ;④ .
(2)若已知一次函数
和
的图象(如图2),求出它们的交点
(坐标同图1),写出不等式
的解集.
![](https://img.xkw.com/dksih/QBM/2024/3/27/3462835785482240/3463432438775808/STEM/fd329225ab23496e9b97b78b36a24f1c.png?resizew=306)
(1)如他在同一个直角坐标系中画出一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c31c4f39399ec245a67db2933ed639f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812eed46a589bde8b7c78a81a8cf9b9a.png)
一次函数与方程的关系 | (1)一次函数的解析式就是一个二元一次方程; (2)点B的横坐标是方程①_____的解: (3)点 ![]() ![]() ![]() ![]() |
一次函数与不等式的关系 | (1)函数![]() ![]() ![]() (2)函数 ![]() ![]() ![]() |
(2)若已知一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b3c8be9aee074c9a3203abace248ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1efa4f93a051f6e2e377070b8b41192f.png)
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2 . 定义运算
:当
时,
;当
时,
;如:
;
______,当
时,
______;
(2)若
,求x的取值范围;
(3)如图,已知直线
与
相交于点
,若
,直接写出x的取值范围是_______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bcf98ae4aff5b41b9356ee67ad9f562.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1132de2e8913dba9c5cc2396ecb09fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a3ace60c550dd250801d67deb039065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a46e678bf9d2df5ad4c782b3dc22f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4882eab3255409d32b0e847bbde8597.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25b7d8ac78695fc37b826baad3c9c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/952ba1d5e63c2d198edf0d29246248e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f417f76e2e7eb5231d8e90fb85c5b17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28a1a1f84bf33691130947e96b1d2f9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5eac01e3ee0c386969672208e8b5e6.png)
(3)如图,已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e4c6b0d5d741ba353f3152bc5c4505.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d60ce87690064a7d436d94e6b307931.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5cf0417e0f751ebf41c74f65e87d096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02ad69b0dce9efd1088a1cf89574cafa.png)
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2024-03-28更新
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156次组卷
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2卷引用:辽宁省沈阳市第四十三中学2022-2023学年八年级下学期3月月考数学试题
3 . 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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4 . 如图1,在矩形
中,
,
,E为
边上的中点,连接
,与对角线
交于点F,G为
边上的动点(含端点),过点G且平行于
的直线分别与
,
交于P,Q两点.设
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/26/8f8a02c8-5bc8-4410-bcd0-ea2517ae95a3.png?resizew=312)
(1)求出y与x之间的函数关系式,并写出自变量x的取值范围;
(2)在如图2所示的平面直角坐标系中,画出此函数的图象,并写出此函数的一条性质:
(3)若函数
的图象与该函数的图象有两个交点,则m的取值范围为__________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b65065ec3a0cb4b050989165c003d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ebb33adb2310a6e03918761e68204a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa7e162d36074987cecd874f946480d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9ff0a6113c45cbf1bba72ebba589a86.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/26/8f8a02c8-5bc8-4410-bcd0-ea2517ae95a3.png?resizew=312)
(1)求出y与x之间的函数关系式,并写出自变量x的取值范围;
(2)在如图2所示的平面直角坐标系中,画出此函数的图象,并写出此函数的一条性质:
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc0b7ecccdda6623f2a49e6e05cd7c4c.png)
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5 . 已知一次函数
与
是常数,
的图象的交点坐标是
,不等式
解集是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4e84801c624273c969392f5f45c7646.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/484d5ce742592d462713061d8eac293d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/103b6ff65be79b98e05c368ddcae533c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f48a644e1135f4ddcd2fe1a345769812.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18b4a175909ff9c43d9c7ea23943d817.png)
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2卷引用:2023年浙江省杭州市西湖区紫金港中学中考数学二模模拟试题
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6 . 如图1,在矩形
中,
.动点
从
出发以
的速度向
运动,动点
从
出发以
沿折线
运动,当点
运动到
时,点
立即停止运动,运动时间记为
.把线段
绕点
逆时针旋转
得线段
,连接
,
,运动过程中四边形
的面积记为
,且
,
的面积记为
.
与
的函数关系式以及对应自变量
的取值范围.
(2)在给定的平面直角坐标系中,画出
的函数图象,并写出函数
图象的一条性质:________.
(3)结合图象,当
时,直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/262c7476d86456505d7c32413723adb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b9174c3b1324cf81098e42e0480bcc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc2d9b900111188aca83126dff97f32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c421682f548aa944df7b124b4d732a1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff27eea7545bb06f9472f91290c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a74c45f334b0d49cc203526f7f6e43e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a0c289f271a0b39f71d588ea9cea6d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/217d37ca5469a57cb7417a2ac0d58efe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9724cf149ccc974596673c8aaae9558f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)在给定的平面直角坐标系中,画出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9724cf149ccc974596673c8aaae9558f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
(3)结合图象,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421a7d6f54bf58a7a4f4ce61e06aefa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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7 . 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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2024-03-22更新
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351次组卷
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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
名校
8 . 如图,在矩形中,点E为
边的中点,动点P从D点以每秒1个单位长度的速度出发,沿着折线D→C→B方向运动,当点P到达B点时停止运动.若
,
,设动点P的运动时间为x秒,
的面积为y.
(1)请直接写出y与x的函数解析式,并写出自变量x的取值范围;
(2)在直角坐标系中画出y与x的函数图象,并写出该函数的一条性质;
(3)如图直线l为函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c049e84fb8b23e4dea5c786fc40d6d3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/580834c9a5e72432968c46b5e42c1286.png)
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2024-03-18更新
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403次组卷
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2卷引用:重庆市巴南区2023-2024学年九年级上学期11月月考数学试题
9 . 若直线
和
相交于点
,则关于x的不等式
的解集是 _____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b9f0b9e53a83e68f5fec944f343119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d8041c797b98b834c70dbf7d1d4346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd4a16e20f78e47c91f060aca1cd090.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ba35a14a4be0c827fc5740ae02db0f2.png)
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2024-03-17更新
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158次组卷
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3卷引用:2023年广东省广州市海珠区中考一模数学试卷
2023年广东省广州市海珠区中考一模数学试卷(已下线)专题 08 一次函数(5大易错点分析)-备战2024年中考数学考试易错题(广东专用)江苏省南通市启东市2023-2024学年八年级下学期4月期中数学试题
10 . 一次函数
与
的图象如图,则下列结论:①
;②关于
的方程
的解是
;③当
时,
;④当
时,
.其中正确的有______ (填序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed06ccefffc165f9c77250cd28301d8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ab5ea5fce0a0632eef687145713c55a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/592592c2b30123d049e7eaa577a6f3f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b061efa4a480bec114f9138eef863d98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba53065eb180a682305fddb95d14b62f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b83a660527359758db64e6566466293.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ac67e9a909472ab852d38d2ec66a1e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b02f266bd253738e315e84231235f0d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16774027ed156c3fb6aa5f70b13b9365.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/6992f571-6e26-4411-b73d-fd6c5ed81547.png?resizew=157)
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