如图1,在平面直角坐标系中,矩形
的边
、
分别在坐标轴上,且
,反比例函数
的图象与
、
分别交于点
、
,连接
.
(1)如图2,连接
、
,当
的面积为2时.
①
________;
②求
的面积;
(2)如图3,将
沿
翻折,当点B的对称点F恰好落在边
上时,求k的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/132de9682ce9a412b7b517aa209726ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6967ebd791092c62b4ef97924d91883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7a3e520a16d4fdd73c4e6a4ce7be0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5acb114aa9f2bdb7b63a0b63e9da3c01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03517310ea1e913f709753592ac65ffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/9/92ecc48e-77ab-4cd2-bf1c-db1ddc29af6d.png?resizew=430)
(1)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c042ff18466e8165fadf343d142a4b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/598c4ff9fc8518fa4829e39254d3f6e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abc98123df1766ddb0822c0af25a4606.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/467405b57ddf673891dd4bc7a2b1507a.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4457e3b494a948e0d98fe8bd0bab534.png)
(2)如图3,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7300872fd5f68217c7a170dd350ca6b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6967ebd791092c62b4ef97924d91883.png)
2023·江苏徐州·三模 查看更多[3]
2023年江苏省徐州市树人初级中学中考三模数学试题(已下线)专题02 反比例函数应用(五大类型)(题型专练)-2023-2024学年九年级数学上册《知识解读·题型专练》(北师大版)12-反比例函数的图像与性质及实际应用
更新时间:2023-05-29 22:31:28
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解题方法
【推荐1】(1)用“>”、“=”、“<”填空:
_________
,
_________
,
_________![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb1d903ce608322f306f9aaaf906a088.png)
(2)由(1)中各式猜想:对于任意正实数a、b,a+b_________
(填“<”、“>”、“≤”或“≥”),并说明理由;
(3)结论应用:
若a>0,则当a=_________时,
有最小值;若b>0,
有最小值,最小值为_________;
(4)问题解决:如图,已知点A在反比例函数
的图像上,点B在反比例函数
的图像上,且AB∥x轴,过点A作AD⊥x轴于点D,过点B作BC⊥x轴于点C.四边形ABCD的周长是否存在最小值?若存在,求出其最小值,并写出此时点A的坐标;若不存在,说明理由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d0b3cf37af6edbc6f18b6837d4ac03f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0262fa607d8a89554cf053b5d83c1784.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f249266326e28343228374919987cd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fbc0abca4378ab81621d28c95f4ab6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ece9cb3fed1f95e6ecf60c12ef77dcfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb1d903ce608322f306f9aaaf906a088.png)
(2)由(1)中各式猜想:对于任意正实数a、b,a+b_________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92db8e1e24c0ca83f98aa6d44b35852e.png)
(3)结论应用:
若a>0,则当a=_________时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/741b7e4a8b9f084e5024fd4c5accb271.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c1a2fe69d4ab3e5777f36c21d41c047.png)
(4)问题解决:如图,已知点A在反比例函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663c087c5c17dbdde78b0eb37f4593ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4b4d4a30f9c354536fe30d5d75ea37d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/cc52e09a-eb28-4ab5-bdc1-9a5604786b62.png?resizew=149)
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【推荐2】如图,在平面直角坐标系xOy中,△OA1B1是等边三角形,点B1的坐标是(2,0),反比例函数y=
的图象经过点A1.
(1)求反比例函数的解析式.
(2)如图,以B1为顶点作等边三角形B1A2B2,使点B2在x轴上,点A2在反比例函数y=
的图象上.若要使点B2在反比例函数y=
的图象上,需将△B1A2B2向上平移多少个单位长度?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abb3a62e46296c417261156b51ec6b4.png)
(1)求反比例函数的解析式.
(2)如图,以B1为顶点作等边三角形B1A2B2,使点B2在x轴上,点A2在反比例函数y=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abb3a62e46296c417261156b51ec6b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abb3a62e46296c417261156b51ec6b4.png)
![](https://img.xkw.com/dksih/QBM/2020/4/13/2440405465800704/2440607807037440/STEM/30abd5e99c154de1888274fdbb4c79ef.png?resizew=217)
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【推荐1】(1)探究新知:
如图,已知三角形ABC与三角形ABD的面积相等,试判断AB与CD的位置关系,并说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/22/a168be0a-bbe6-4d64-b49c-8c20699973b5.png?resizew=179)
(2)结论应用:
如图,点M、N在反比例函数
的图像是哪个,过点M作ME⊥y轴,过点N作NF⊥x轴,垂足分别为E、F,试证明:
.
如图,已知三角形ABC与三角形ABD的面积相等,试判断AB与CD的位置关系,并说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/22/a168be0a-bbe6-4d64-b49c-8c20699973b5.png?resizew=179)
(2)结论应用:
如图,点M、N在反比例函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b0b612460326448de36e160c8d29af9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eb21057985673147fc5afde46417e61.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/22/b65e644e-946e-42c8-948c-4cc33ea48e33.png?resizew=183)
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【推荐2】如图,在Rt△OAC中,点P在AC边上,点Q是OA的中点,反比例函数
恰好经过P,Q两点.
![](https://img.xkw.com/dksih/QBM/2022/4/17/2959996809306112/2960883483246592/STEM/c3a0d849-2590-439d-94ac-7a5a6a2bd66d.png?resizew=178)
(1)若点A坐标为(6,4),则k=______,点P坐标为______.
(2)若
,求反比例函数
的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://img.xkw.com/dksih/QBM/2022/4/17/2959996809306112/2960883483246592/STEM/c3a0d849-2590-439d-94ac-7a5a6a2bd66d.png?resizew=178)
(1)若点A坐标为(6,4),则k=______,点P坐标为______.
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b43152fa4997a834622d9a6f5a0ee5b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
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【推荐1】综合与实践
问题情境:已知,在矩形
中,
,
,点E在边
上(点E不与A,B重合),G为
的中点,将矩形
沿直线
折叠,点
恰好落在边
上的点
处.
(1)如图1,当点
与点
重合时,试判断
与
是否相似,并说明理由;
问题解决:
(2)如图2,若
,求
的值;
(3)如图3,
为
中点,连结
分别与
交于M,N两点,若
为等腰三角形,求
的值.
问题情境:已知,在矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3be96420ac78c8621fcb47a45514fa8.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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(1)如图1,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e67da1bf51e5f87750a63dc9e856ee87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e9b8a991d00fdd2810dda7adc54fd8.png)
问题解决:
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b4f1e7f062b8cb005e8dbaf8462db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304f8bf77804717112155e4c176e1ce6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e323c08b18488d11bd8f3cd74efa971a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/042d8a22d40558df253164145f6c2043.png)
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【推荐2】将一矩形纸片OABC放在平面直角坐标系中,O为原点,点C在x轴上,点A在y轴上,OA=9,OC=15.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/31/ad996ce3-12cd-4f19-a0bc-64b82f88ff79.png?resizew=424)
(1)如图1,在OA上取一点E,将△EOC沿EC折叠,使点O落在边AB上的点D处,求直线EC的解析式;
(2)如图2,在OA,OC边上选取适当的点M,N,将△MON沿MN折叠,使O点落在AB边上的点D'处,过点D'作D'G⊥CO,垂足为G,交MN于点T,连接OT,判断四边形OTD'M的形状,并说明理由;
(3)在(2)的条件下,若点T的坐标为(6,
),点P在直线MN上,坐标轴上是否存在点Q,使以M,D',Q,P为顶点的四边形是平行四边形?若存在,请直接写出点Q的坐标;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/31/ad996ce3-12cd-4f19-a0bc-64b82f88ff79.png?resizew=424)
(1)如图1,在OA上取一点E,将△EOC沿EC折叠,使点O落在边AB上的点D处,求直线EC的解析式;
(2)如图2,在OA,OC边上选取适当的点M,N,将△MON沿MN折叠,使O点落在AB边上的点D'处,过点D'作D'G⊥CO,垂足为G,交MN于点T,连接OT,判断四边形OTD'M的形状,并说明理由;
(3)在(2)的条件下,若点T的坐标为(6,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.png)
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【推荐1】在
中,
,点
(与点
、
不重合)为射线
上一动点,连接
,以
为一边且在
的右侧作正方形
.
(1)如果
,如图①,且点
在线段
上运动,线段
与
之间的位置关系为
___.
(2)如果
,如图②,且点
在线段
上运动.(
)中结论是否成立,为什么?
(3)若正方形
的边
所在直线与线段
所在直线相交于点
,设
,
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27e47690ed332c573186992b6d25654.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5b78d48bd70b977715edc09b1ca98a1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/10/e0893582-e1cb-4b52-ba14-b6e788df9fe0.jpg?resizew=340)
(1)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8120f2eeb724c756b5f84a14c6df527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3062fc98eade665731fd7f1034b51af3.png)
(2)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb980da8e86b4cfd322616dc84fc6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
(3)若正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5b78d48bd70b977715edc09b1ca98a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6c6e7c025362c46a64a8956761f08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8120f2eeb724c756b5f84a14c6df527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4fc2d383876afe5be1103352571805b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98e32b149c6b4a744476aba9a24d179b.png)
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【推荐2】如图,
的一边
经过
的圆心,另一边与
交于点
,作
的平分线与
交于点
,过点
作
的切线,交
的延长线于点
.
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f49d1de7c6dfc04b6e84e23eec0a1d7.png)
(2)若
.
①若
,则
的长为______;
②
的最大值为______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac37366d2b54dc7d9a95ac6ddda5f3a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac37366d2b54dc7d9a95ac6ddda5f3a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f49d1de7c6dfc04b6e84e23eec0a1d7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f979d5406af7e951f386dbb55a9617eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7cb1f14ea80010aeb5f47f3c8ee124.png)
![](https://img.xkw.com/dksih/QBM/2020/8/4/2520636778831872/2520735269715968/STEM/7a49732d-8c08-4ebe-be8c-569fc7be6c47.png)
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