名校
1 . 已知在直角坐标平面内,函数
的图象经过点
,点A关于x轴的对称点B在直线
上.
![](https://img.xkw.com/dksih/QBM/2024/1/27/3420206444060672/3421454034526208/STEM/1583fae635fc448896870fe8f9d63b99.png?resizew=257)
(1)求k的值:
(2)点P在射线
上,点Q是坐标平面内一点,
轴.如果
是等腰直角三角形,
,求点Q的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5294ca04521fa5de92d5ae032d7c54a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ec562019e0c5cfcf4c8748bdfeca91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac02a054bd0771a56987af33454baaea.png)
![](https://img.xkw.com/dksih/QBM/2024/1/27/3420206444060672/3421454034526208/STEM/1583fae635fc448896870fe8f9d63b99.png?resizew=257)
(1)求k的值:
(2)点P在射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2784a52c4da98dc9df661fc152fc29e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c499b1f470978c4f8cc05ffdebc2e961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/521002bec94a87a6699f17fbb9403fd7.png)
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2 . 近视眼镜的度数
(度)与镜片焦距
(米)呈反比例,其函数关系式为
.如果近似眼镜镜片的焦距
米,那么近视眼镜的度数
为______ .
![](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/c0e194af47c3d3aa5bc4382ae91fa115.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29be23f689eb01e57963495377501257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
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2023-09-16更新
|
168次组卷
|
2卷引用:上海市青浦区崧淀中学2020-2021学年八年级上学期期末数学试题
3 . 已知
与
成反比例,
与
成正比例.又当
时,
;当
时,
.试问
是
的函数吗?当
时,
的值是多少?
![](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/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/224d30ca84f1aeeeda7a718e751a4925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2f3fa679bb55ded25a9b72a8e788cb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b6a27a9d5d345f1e04020bfea2770ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2764dbfd55c4149f6c2ba3ef87b9416.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/592830c3456745cee7d6d1cdc4f5631f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
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2023-08-17更新
|
76次组卷
|
3卷引用:上海市江湾初级中学2023-2024学年八年级上学期期末数学试题
上海市江湾初级中学2023-2024学年八年级上学期期末数学试题(已下线)八年级数学开学摸底考01(上海专用)-2023-2024学年初中下学期开学摸底考试卷广东省河源市龙川县黄石中学2022-2023学年九年级下学期开学考试数学试题
4 . 如图,已知反比例函数
的图象经过点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/4/2388ec50-b583-4998-9823-2fb2ef00f543.png?resizew=177)
(1)求这个反比例函数的关系式.
(2)试判断点
是否在这个反比例函数图象上,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45bd7e92dae1e0c2af6c33d5e202f544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14d3bbabfd4479762f43fc7b6b2c8d62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/4/2388ec50-b583-4998-9823-2fb2ef00f543.png?resizew=177)
(1)求这个反比例函数的关系式.
(2)试判断点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c073f995d13278dd7b00e991d521cee.png)
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5 . 已知反比例函数的图象经过点A(-2,-3).
(1)求该反比例函数的表达式;
(2)判断点
是否在该反比例函数的图象上,并说明理由.
(1)求该反比例函数的表达式;
(2)判断点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bed3f6fbe842d7adc5139dc75c7e37a6.png)
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6 . 如图,点
是函数
图像上的任意一点,过点
作AB
x轴,交另一个函数
的图像于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/24/99a2404a-b80c-4ca2-9199-0efe17638c06.png?resizew=184)
(1)若
,则
________.
(2)当
时,若点
的横坐标是1,则线段
________.
(3)若无论点
在何处,函数
图像上总存在一点
,使得四边形
为平行四边形,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75a68d5967bb4cebf2cb90810be23925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf11c9edf7cfaeb5cb34869057d5809c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/24/99a2404a-b80c-4ca2-9199-0efe17638c06.png?resizew=184)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02037494902b00e5682bee32f6913667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c05442392a451facd9283696e8f5be48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a836d2dfc31d2bfc949bac8403cf2a4e.png)
(3)若无论点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf11c9edf7cfaeb5cb34869057d5809c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7110a27677d14db9991cbc80f9fb4edf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2022-08-19更新
|
480次组卷
|
8卷引用:开学测模拟卷01(范围十六章~十八章)-【暑假自学课】2023年新八年级数学暑假精品课(沪教版,上海专用)
(已下线)开学测模拟卷01(范围十六章~十八章)-【暑假自学课】2023年新八年级数学暑假精品课(沪教版,上海专用)吉林省长春汽车经济技术开发区2021-2022学年八年级下学期线上教学质量检测数学试题吉林省长春市长春汽车经济技术开发区2021-2022学年八年级下学期期末数学试题(已下线)专题11.34 反比例函数(存在性问题)(培优篇)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(苏科版)(已下线)专题6.34 反比例函数(存在性问题)(培优篇)(专项练习)-2022-2023学年八年级数学下册基础知识专项讲练(浙教版)(已下线)专题6.16 反比例函数解题方法-设参求值(知识讲解)-2022-2023学年九年级数学上册基础知识专项讲练(北师大版)(已下线)专题02 已知面积求k-【微专题】2022-2023学年九年级数学下册常考点微专题提分精练(人教版)(已下线)专题26.11 “设参求值”解决反比例函数问题(知识讲解)-2022-2023学年九年级数学下册基础知识专项讲练(人教版)
7 . 已知
与
成反比例,且当
时,
;求:当
时,
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b5a9de8a72dda70e3eefeb0a408ffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107babba45f110012183dc4dc54490f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
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8 . 已知反比例函数
,当
时,y=__________ ;当y=2时,x=__________ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c5dbbd1a7f9932567099ee67f2443f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/224d30ca84f1aeeeda7a718e751a4925.png)
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9 . 已知y是x的反比例函数,且当
时,
.
(1)求y关于x的函数解析式;
(2)当
时,求y值;
(3)当
时,求x值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d324b8cc99df14a6418e7d0f7b7d7436.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d059affa3da30ff5b2e8f1c1ceb6ef.png)
(1)求y关于x的函数解析式;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db4f3ea707431e69ce7f67f20b09c5ae.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6618612cbec37e01b9e71521de70e783.png)
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10 . 已知
,
与
成反比例,
与
成正比例,且当x=1时,y=2;当x=2时,y=-2.求y关于x的函数解析式,并求其图像与y轴的交点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/845a73eeb5503d7b95dafee8dd0fece8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b5a9de8a72dda70e3eefeb0a408ffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
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