1 . 如图,在平面直角坐标系中,已知
,
,
,其中a,b,c均为正数,且a,b,c满足
,
的算术平方根为
.
(1)求a,b,c的值.
(2)若点
在平面直角坐标系中,且三角形
的面积与三角形
的面积相等,求关于x的不等式
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7799d713e6f2be4cb542b0372916a25e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c09615735d331befd07664aa47cb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcbc7841183fb31df722c69dc2003e88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75e040a756f8bb3e7566fbaad5f33355.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c462d08d75fcc7ccf9c3ecea1972e26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/18/80b271da-15a0-45a6-8701-d008007124b7.png?resizew=187)
(1)求a,b,c的值.
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e2906ce40edf36235169a1b646c071.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5209df266fefd9131860ea6cf83647f1.png)
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2 . 已知
是不为零的常数,若
的解集为
,则下列推断:①
;②
;③
;④关于
的二元一次方程
,当
取一个不为零的常数时,方程总有一个解为
,其中推断正确的序号有______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ae6c08e4c2f5db9a595dcdbd99f9896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b83a660527359758db64e6566466293.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58c5c6f43a805effe36c00898a8a45f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5b998c9460ba85a821126ff2b72d0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e136e7637543c8ae92c8dcd55b31924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a548f2fb4c28b5d4d4581d5abd4443.png)
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3 . 在平面直角坐标系
中,点
在第三象限,将点P向上平移得到第二象限的点
,且
,则下列结论正确的有______________ .(写出所有正确结论的序号)
①若点P的纵坐标为
,则
;
②若点Q到x轴的距离为1,则
;
③
的最大值为16;
④点M在y轴上,当
时,三角形
的面积最大值为16.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c4be990b65a6e4739a7827d6db5095.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b3cb96f78ec5153e97ba299e8d18ac5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ab5e2f237965a18a129502aeed2022.png)
①若点P的纵坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
②若点Q到x轴的距离为1,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
④点M在y轴上,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f184ef9e0d57554e95f369c9d4bbfea1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68855ca966712c3d38f73711ea997bcf.png)
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2023-07-13更新
|
252次组卷
|
4卷引用:福建省厦门市集美区2022-2023年七年级下学期期末数学试题
福建省厦门市集美区2022-2023年七年级下学期期末数学试题(已下线)第3章 位置与坐标(单元测试·综合卷)-2023-2024学年八年级数学上册基础知识专项突破讲与练(北师大版)(已下线)第5章 平面直角坐标系(单元测试·综合卷)-2023-2024学年八年级数学上册基础知识专项突破讲与练(苏科版)(已下线)专题9.10 不等式与不等式组(全章分层练习)(提升练)-2023-2024学年七年级数学下册基础知识专项突破讲与练(人教版)
4 . 已知m是不等式
的解,而n不是
的解,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff0f6407aa07250c187615aedc16686a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff0f6407aa07250c187615aedc16686a.png)
A.![]() | B.m | C.![]() | D.![]() |
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5 . 计算、解不等式(组):
(1)计算
;
(2)计算
;
(3)解不等式:
;
(4)解不等式组:
.
(1)计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/463eac6ec25a90f8c97517163d9ad3d2.png)
(2)计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf7daca0ec3fa130920932d25ce33e9.png)
(3)解不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcbafbcfe493f08dd2fcea38f2d5df42.png)
(4)解不等式组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e847cd105f4acd1b2515c9046afc19a7.png)
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6 . 课堂上,老师设计了“接力游戏”,规则:一列同学每人只完成解不等式的一步变形,即前一个同学完成一步,后一个同学接着前一个同学的步骤进行下一步变形,直至解出不等式的解集.请根据下面的“接力游戏”回答问题.
任务一:①在“接力游戏”中,乙同学是根据_______进行变形的.
A.等式的基本性质
B.不等式的基本性质
C.乘法对加法的分配律
②在“接力游戏”中,出现错误的是_____同学,这一步错误的原因是_______________.
任务二:在“接力游戏”中该不等式的正确解集是_________.
任务三:除纠正上述错误外,请你根据平时的学习经验,针对解不等式时还需要注意的事项给同学们提一条建议.
任务一:①在“接力游戏”中,乙同学是根据_______进行变形的.
A.等式的基本性质
B.不等式的基本性质
C.乘法对加法的分配律
②在“接力游戏”中,出现错误的是_____同学,这一步错误的原因是_______________.
任务二:在“接力游戏”中该不等式的正确解集是_________.
任务三:除纠正上述错误外,请你根据平时的学习经验,针对解不等式时还需要注意的事项给同学们提一条建议.
接力游戏 老师 ![]() 甲同学 ![]() 乙同学 ![]() 丙同学 ![]() 丁同学 ![]() 戊同学 ![]() |
您最近一年使用:0次
7 . 若
时,则关于
的不等式组
的解集是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ede78fd7ac619ea597856254bb5d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84996473a5b2f3d7c9a535825f1dbe2e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8 . 如图,在数轴上,点A、B分别表示数
,
,且点
在点
的左侧.
的取值范围;
(2)若点
表示的数是关于
的不等式
的解,求
的整数解.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/272f801e4afe574af5706f49868941d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e49d02692fe73b2d6c28a9567e568b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eff2dc737627bd9854b91ac7c03515f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
9 . 对于平面直角坐标系xOy中的点
和图形G,给出如下定义:将图形G向右
或向左
平移
个单位长度,再向上
或向下
平移
个单位长度,得到图形
,称图形
为图形G关于点M的“伴随图形”.
.
①若点
,点
为点E关于点M的“伴随图形”,则点
的坐标为______;
②若点
,点
为点T关于点M的“伴随图形”,且点
在第一象限,求t的取值范围;
(2)如图2,
,
,
,
,图形H是正方形
关于点M的“伴随图形”.当图形H只在第一或第四象限,且与正方形
有公共点时,直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d6bb01f1044358cc5fee441bc62489.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/465a56c906fba99ade616775f37cb8f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/396f2055f52c0c2ce16a6d456df2ae51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8d40e257f9c446b8e30fa841b74bbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4b151b08d8f44689da58500dfe9a90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3989d38e19836215cbc7c31868eee472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce22731a412796fe2925e01f765d5976.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81722445de00f3cfcc3cb97e45b0d8dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81722445de00f3cfcc3cb97e45b0d8dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e584f799ea554fc5533925ead4672501.png)
①若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea5b6926cdb99eb58070b8720718f71a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b1a5427d8ff23df0f3ec194756c84c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b1a5427d8ff23df0f3ec194756c84c.png)
②若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d924a8f3d97d09c5f82cd639dc8d485.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e01c77ea8aec0f14e3e6c37ed374cda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e01c77ea8aec0f14e3e6c37ed374cda.png)
(2)如图2,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c59f0e35b7ae5206e45878934482b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f89b18f69812fb34fd1290e2f1b36aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9194ae9aab90548e433bf0f4748ceb70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c5bdf7cb8958e92e750646138ef6b3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
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2023-07-06更新
|
439次组卷
|
2卷引用:北京市丰台区2022-2023学年七年级下学期期末数学试题
10 . 如图,在平面直角坐标系
中,直线l经过原点O和点
.
(1)①在图中描出点
,
,
,
;
②在点
,
,
,
中,位于直线l左上方的点是______;位于直线l右下方的点是______;
(2)若点
位于直线l的左上方,则b的取值范围是______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2beb91f10d2d8f2aa0dcc3f5cd1598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c59f0e35b7ae5206e45878934482b8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/11/b01d796d-4ebc-4cbd-bc14-edd40158ff2f.jpg?resizew=188)
(1)①在图中描出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c7768ac6d90611725f8669cc6ed65fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/befc10fdad1a063a00a2cb5583f1363c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bdc5ec9c0dbf310bb4f311dc42462c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dab9bbf42cb73687d539bee8b63a272.png)
②在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797e67927616b141ed7c6b83f8b6f4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fee50575e3ebd56c4f46dd0bbf8e55d3.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30fa6619af0f1bc8225dab65196fe773.png)
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