如图,一次函数
(
为常数,且
)的图象与反比例函数
(
为常数,且
)的图象相交于
,
两点.
![](https://img.xkw.com/dksih/QBM/2022/4/15/2958566024077312/2960006631677952/STEM/18aaa636-a0d4-46c4-8369-bd0e6839d5c1.png?resizew=270)
(1)求
的值;
(2)若一次函数
的图象与反比例函数
的图象有且只有一个公共点,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910bfbc1eaaa76a06f7eb7bf63653e3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1326c3aac61397f6be2d46bfbb8fe917.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb79a1b0c6dc78e6de17de6bed477fb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f494e4db0034036232b9857b95ca8cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e6c8170dd3ad55d366c866dfa21c7df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034b719d5c02222225b3e639a79af5fb.png)
![](https://img.xkw.com/dksih/QBM/2022/4/15/2958566024077312/2960006631677952/STEM/18aaa636-a0d4-46c4-8369-bd0e6839d5c1.png?resizew=270)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)若一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f401b56058f8325f84b3ca97a28314da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb79a1b0c6dc78e6de17de6bed477fb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
2022·广东清远·一模 查看更多[3]
2022年广东省清远市英德市中考一模数学试题黑龙江省大庆市第六十九中学2022—2023学年九年级上学期月考数学(五四制)试题(已下线)专题03 反比例函数与一次函数综合三类型-【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)
更新时间:2022-04-17 10:51:49
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解答题-问答题
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适中
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【推荐1】已知:如图所示,在
中,
,
,
,点P从点A开始沿
边向点B以
的速度移动,点Q从点B开始沿
边向点C以
的速度移动.当P、Q两点中有一点到达终点,则同时停止运动.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/11/b7edf5d9-80f1-46f2-9473-6bdc473a78aa.png?resizew=127)
(1)如果P,Q分别从A,B同时出发,那么几秒后,
的面积等于
?
(2)如果P,Q分别从A,B同时出发,在运动过程中,是否存在这样的时刻,使以P为圆心,
为半径的圆正好经过点Q?若存在,求出运动时间,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6850a299395c314b8f8f2f8ca50c9895.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b276eec990e6edaae4bd27440dd3eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b9174c3b1324cf81098e42e0480bcc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc2d9b900111188aca83126dff97f32.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/11/b7edf5d9-80f1-46f2-9473-6bdc473a78aa.png?resizew=127)
(1)如果P,Q分别从A,B同时出发,那么几秒后,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c495b8fd7f7bb21c177c9d50fbf6919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38309217f0970107f6f6e65a4c77bae6.png)
(2)如果P,Q分别从A,B同时出发,在运动过程中,是否存在这样的时刻,使以P为圆心,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
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【推荐2】如图,在
中,
,
,
.点
从点
开始沿
边向点
以
的速度移动,与此同时,点
从点
开始沿射线
以
的速度移动.当点
停止移动时,点
同时停止.点
,
分别从
,
同时出发,经过时间为
秒.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/30/9e861dad-fd92-414b-ad4f-15d12bfc0d2f.png?resizew=102)
(1)用
表示
的面积;
(2)当
为何值时,以点
,
,
,
为顶点的四边形面积为
;
(3)在移动过程中线段
长度的最小值为________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d9142db4dd2ef151bf3d4a63afb61e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212063c7e452cd2bd0378d67929e3f6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4d13cedc9b2b09db0fc23727137db94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51ddd25759f63f954bb1e0e6b94fda1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f600a77e7b9c0ad939102d2ec0de3961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.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/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/30/9e861dad-fd92-414b-ad4f-15d12bfc0d2f.png?resizew=102)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c495b8fd7f7bb21c177c9d50fbf6919.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/b108dc101a7da1271c849ddc2cf0efbb.png)
(3)在移动过程中线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee9179bee09452bbd0e5080501bb0ee9.png)
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【推荐1】某超市经销香米,进价为12元/千克.在确定售价时进行了市场调研,发现在盈利的前提下该香米的售价不高于19元/千克,且该香米每天的销售量
(千克)与售价
(元/千克)之间满足一次函数关系,部分数据如下表所示:
(1)求
与
之间的函数解析式,并直接写出自变量的取值范围;
(2)当售价定为多少时,才能使当天的利润最大?最大利润是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
售价![]() | 16 | 18 |
销售量![]() | 1000 | 800 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)当售价定为多少时,才能使当天的利润最大?最大利润是多少?
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【推荐2】如图(1),已知直线
与x轴、y轴分别交于点A,C,以
为边在第一象限内作矩形
.
(2)如图(2),将
对折,使得点A与点C重合,折痕分别交
于点D,E,求直线
的解析式;
(3)在坐标平面内,是否存在点P(除点B外),使得
与
全等?若存在,请求出所有符合条件的点P的坐标:若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc9118cc77fc0a045337745890e50cad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b26075ea855e1504fe8d2e3aec383b1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
(2)如图(2),将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa49835cb36d11ba406fa8cabbecd69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(3)在坐标平面内,是否存在点P(除点B外),使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9524e3810e06dc781285f1289e75d653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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【推荐1】在工程实施过程中,某工程队接受一项开挖水渠的工程,所需天数y(天)与每天完成工程量x米的函数关系图像如图所示,是双曲线的一部分.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/6/c82665a4-4257-409b-8144-0ebb4d823553.png?resizew=290)
(1)请根据题意,求y与x之间的函数表达式;
(2)若该工程队有2台挖掘机,每台挖掘机每天能够开挖水渠30米,问该工程队需要用多少天才能完成此项任务?
(3)工程队在(2)的条件下工作5天后接到防汛紧急通知,最多再给5天时间完成全部任务,则最少还需调配几台挖掘机?
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/6/c82665a4-4257-409b-8144-0ebb4d823553.png?resizew=290)
(1)请根据题意,求y与x之间的函数表达式;
(2)若该工程队有2台挖掘机,每台挖掘机每天能够开挖水渠30米,问该工程队需要用多少天才能完成此项任务?
(3)工程队在(2)的条件下工作5天后接到防汛紧急通知,最多再给5天时间完成全部任务,则最少还需调配几台挖掘机?
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【推荐2】已知双曲线
的图像经过点A(3,4).
(1)求k的值;
(2)请判断点B(2,6)是否在这个反比例函数的图像上,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7870fb0b0f49826ece4f6702bed798.png)
(1)求k的值;
(2)请判断点B(2,6)是否在这个反比例函数的图像上,并说明理由.
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【推荐1】如图,一次函数
的图象与反比例函数
的图象交于A,
两点,且与
轴交于点
,点A的坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/9829d4b4-befa-47ad-9b17-0e6ab3753f68.png?resizew=128)
(1)求
及
的值;
(2)结合图象直接写出不等式组
的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54479885d4ab2f717d2e97718da04b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad20e2bc6576fc461419f8f138d26e7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/9829d4b4-befa-47ad-9b17-0e6ab3753f68.png?resizew=128)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)结合图象直接写出不等式组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8403fcf6f6014696d57d752d57d46c5b.png)
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【推荐2】设函数
,函数
(
,
,b是常数,
,
),函数
和函数
的图象交于点
,点
,
(1)求函数
,
的表达式;
(2)结合函数的图象分析,当
时,直接写出x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a249a4460b4edd504ae4dfecccd032bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0bb22b9722cbbca2802610d6e58554e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1326c3aac61397f6be2d46bfbb8fe917.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f494e4db0034036232b9857b95ca8cb.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/d5343f6dee6d12906b09ff03166350a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49a31f8e8dba418bd5d886998ef8d17.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
(2)结合函数的图象分析,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99508de16dec79f7cc1b9e82a67cfe1b.png)
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