在平面直角坐标系中,
在x轴上,
,
,D为
的中点,若E为射线
上任意一点,
,交直线
于F点.G为
的中点,延长
交
于点H.
(2)在点E在运动过程中(不与点O,点C重合),请证明以C、E、H、F为顶点的四边形总是矩形.
(3)若
.请直接写出直线
的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/144f906fa58b1b1c0ce9b1b21254b28b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b10f29656b4a21aa7ac846f267104ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdc93e193fad261689949a52819753f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c175c239742c7ba8fd67a6d5f99cb1b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
(2)在点E在运动过程中(不与点O,点C重合),请证明以C、E、H、F为顶点的四边形总是矩形.
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30455a77001ddc5c1336f87647849ec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
22-23八年级下·湖北黄冈·期末 查看更多[2]
湖北省黄冈市黄梅县2022-2023学年八年级下学期期末数学试题(已下线)专题08一次函数的实际应用(四大题型)-【好题汇编】备战2023-2024学年八年级数学下学期期末真题分类汇编(湖北专用)
更新时间:2023-07-10 20:33:52
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相似题推荐
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【推荐1】综合与探究:如图,在平面直角坐标系中,Rt△AOC的直角边OC在y轴正半轴上,且顶点O与坐标原点重合,点A的坐标为(2,4),直线y=-x+b过点A,与x轴交于点B.
(1)求点B的坐标及直线AB的解析式;
(2)动点P从点O出发,以每秒1个单位长的速度,沿O-C-A的路线向点A运动,同时动点M从点B出发,以相同的速度沿BO的方向向O运动,过点M作MQ⊥x轴,交线段BA或线段AO于点Q,当点P到达A点时,点P和点M都停止运动.在运动过程中,设动点P运动的时间为t秒.△APQ的面积为S,求S关于t的函数关系式;
(3)是否存在以M、P、Q为顶点的三角形的面积与S相等?若存在,求t的值;若不存在,请说明理由.
(1)求点B的坐标及直线AB的解析式;
(2)动点P从点O出发,以每秒1个单位长的速度,沿O-C-A的路线向点A运动,同时动点M从点B出发,以相同的速度沿BO的方向向O运动,过点M作MQ⊥x轴,交线段BA或线段AO于点Q,当点P到达A点时,点P和点M都停止运动.在运动过程中,设动点P运动的时间为t秒.△APQ的面积为S,求S关于t的函数关系式;
(3)是否存在以M、P、Q为顶点的三角形的面积与S相等?若存在,求t的值;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2018/12/26/2105149548101632/null/STEM/48d1a1e1e13249d5b67d337166eb51f4.png?resizew=165)
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真题
【推荐2】如图,矩形AOCB的顶点A、C分别位于x轴和y轴的正半轴上,线段OA、OC的长度满足方程|x-15|+=0(OB>OC),直线y=kx+b分别与x轴、y轴交于M、N两点,连接BN.将△BCN沿直线BN折叠,点C恰好落在直线MN上的点D处,且tan∠CBD=.
⑴ 求点B的坐标.
⑵ 求直线BN的解析式.
⑶ 将直线BN以每秒1个单位长度的速度沿y轴向下平移,求直线BN扫过矩形AOCB的面积S关于运动的时间t(0<t≤13)的函数关系式.
⑴ 求点B的坐标.
⑵ 求直线BN的解析式.
⑶ 将直线BN以每秒1个单位长度的速度沿y轴向下平移,求直线BN扫过矩形AOCB的面积S关于运动的时间t(0<t≤13)的函数关系式.
![](https://img.xkw.com/dksih/QBM/2017/8/1/1773762363883520/1773762364260352/STEM/73e6b28fee704187b4e7acb95f32f8d8.png?resizew=182)
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【推荐1】如图1,在
中,
,过点A作直线
,使
,过点B作
于点N,过点C作
于点M.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/9b8b3203-af77-4f79-9c9e-69f6eef14eea.png?resizew=371)
(1)猜想
与
的数量关系,并说明理由;
(2)求证:
;
(3)如图2,连接
交
于点G,若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcc8e43d38967325855813b7c2ed8110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d85c6b63bef0f632fee2e7e438a4b5cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84bd173466089f8e523dc02808239daf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/9b8b3203-af77-4f79-9c9e-69f6eef14eea.png?resizew=371)
(1)猜想
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e520cef3cebf757a24737ffb661834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c35b4fb9ef7d9345043bc3d34af11e.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7280f59d705945d740479603a50b00fa.png)
(3)如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dafebaaf13781120dc57c277d0267c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd39d1d2dea2f00c32b2f2d9055f1729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f45ffca1eb4ccf380f741d578f07724f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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【推荐2】如图,在
中,
,
,
.动点P从点A出发,沿AB方向以每秒2个单位长度的速度向终点B运动,点Q为线段AP的中点,过点P作
,点M在AB上方,且
,以PQ,PM为边作
.设点P的运动时间为
.
![](https://img.xkw.com/dksih/QBM/2022/6/9/2997759577497600/3001319679664128/STEM/7d592c15a20247bda265f588c8520e02.png?resizew=183)
(1)线段AC的长为________,线段AB的长为________;
(2)求
的面积;(用含t的代数式表示)
(3)当线段MN与边BC有公共点时,求t的取值范围;
(4)当点M到
任意两边所在直线的距离相等时,直接写出此时t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ebb33adb2310a6e03918761e68204a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6beb17d468d0e90f9c08a8dbbc05541.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c75669fd005a99ec43828509f49866f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a2d036012ddb4bb44867c0264904af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2709d5c37fc30725598ed2a731b2e6da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c1a48b92c61d209d0556e4cd8fdb70b.png)
![](https://img.xkw.com/dksih/QBM/2022/6/9/2997759577497600/3001319679664128/STEM/7d592c15a20247bda265f588c8520e02.png?resizew=183)
(1)线段AC的长为________,线段AB的长为________;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2709d5c37fc30725598ed2a731b2e6da.png)
(3)当线段MN与边BC有公共点时,求t的取值范围;
(4)当点M到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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【推荐3】(1)如图①,在直角△ABC中,∠BAC=90°,AB=AC,点D为BC边上一动点(与点B不重合),连接AD,△ABD绕点A逆时针旋转90°,到△ACE,那么CE,BD之间的位置关系为 ,数量关系为 ;
(2)如图②,△ABC中,∠CAB=90°,AB=AC,D,E为BC上两点,且∠DAE=45°,求证:BD2+CE2=DE2.
(3)如图③,△ABC中,∠CAB=120°,AB=AC,∠DAE=60°,BC=
,若以BD,DE,EC为边的三角形是以BD为斜边的直角三角形时,求BE的长.
(2)如图②,△ABC中,∠CAB=90°,AB=AC,D,E为BC上两点,且∠DAE=45°,求证:BD2+CE2=DE2.
(3)如图③,△ABC中,∠CAB=120°,AB=AC,∠DAE=60°,BC=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f2c06207565e9fa6a288a788e4ab2fd.png)
![](https://img.xkw.com/dksih/QBM/2020/10/10/2567733602795520/2568724518027264/STEM/6553b6c9263d418eab0531d56f31dee9.png?resizew=534)
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【推荐1】已知:直线
与x轴、y轴分别相交于点A和点B,点C在线段AO上.将
沿BC折叠后,点O恰好落在AB边上点D处.
(1)求出OC的长?
(2)点E、F是直线BC上的两点,若
是以EF为斜边的等腰直角三角形,求点F的坐标;
(3)取AB的中点M,若点P在y轴上,点Q在直线AB上,是否存在以C、M、P、Q为顶点的四边形为平行四边形?若存在,请求出所有满足条件的Q点坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8648fb5353d892f0504ca5302a19d132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b83beedb3438153e6f728545fe3e03.png)
(1)求出OC的长?
(2)点E、F是直线BC上的两点,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
(3)取AB的中点M,若点P在y轴上,点Q在直线AB上,是否存在以C、M、P、Q为顶点的四边形为平行四边形?若存在,请求出所有满足条件的Q点坐标;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/17/4d0bbab5-0c5b-4aa0-8b47-84bc60149608.png?resizew=506)
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【推荐2】【基础探究】如图1,四边形
中,
,
为对角线,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/899c2ab3-a398-48de-aac6-1112b015d30d.png?resizew=528)
(1)求证:
平分![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4189a0821a0ffab9dc171ecd279ba442.png)
(2)若
,
,则
______.
(3)【应用拓展】如图2.四边形
中,
,
为对角线,
,E为
的中点,连接
、
,
与
交于点F.若
,
,请直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e8b47fc9201d77d43b805efefe693e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e854e59927399d0e2faae86735cd158e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/899c2ab3-a398-48de-aac6-1112b015d30d.png?resizew=528)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4189a0821a0ffab9dc171ecd279ba442.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4b1fdfa6c28c7b4113ba306547aa4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f63d194aa0d4091618b6f41f569ee2.png)
(3)【应用拓展】如图2.四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c73de34f477afd633538e1bc9e73b7ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e854e59927399d0e2faae86735cd158e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55cd495dbd7296b0092fa3e1ef77477.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8832c5450a61500ccbf73d95e16f449.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad75d52164547b022d8c895205a6c84.png)
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【推荐1】如图
,在长方形
中,
,含
角的直角三角板放置在长方形内,
,顶点
分别在
上.
(1)求证:
;
(2)若
是斜边
的中点.
①如图2,连接
,请写出线段
与
之间的数量关系,并说明理由;
②如图
,连接
,若
,则
的长等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41aba1711910c6f533cc94319104f4fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84f64b07081b9bc2c82477fd8199c0d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6241f9ef86cd0a902cbadaf336767dbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d68ea4eafd9e981c038a3afed61773e5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/11/f53c7501-9232-44e4-8295-d447f4201492.png?resizew=462)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/858925bb0e6d8709ef90c1d65abf58ad.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
①如图2,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f541f7ae7c39082d202efd28805c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f541f7ae7c39082d202efd28805c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb886e76f71b135ab4eecfaada4f7060.png)
②如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6834ac70927ae08d7d36a1922403c9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
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【推荐2】已知
,以
为边在
外作等腰
,其中
.
(1)如图①,若
,
,求
的度数.
(2)如图②,
,
,
,
.
①若
,
,
的长为______.
②若改变
的大小,但
,
的面积是否变化?若不变,求出其值;若变化,说明变化的规律.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56ee81929c987732fcb379802eeef7a7.png)
(1)如图①,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48a277db452e76240ec83ec6a2864bdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098aaedaf034b8492da4e6a7de9df536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77282d5b97a60264cf15fb74b48e4b59.png)
(2)如图②,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/597ce705d3a2fe04d29de9e81ec6250d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c5d383c419b53ea5159625f306760b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/454328a8e75953fdb0835ce80d9566e3.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c96cb3ac8290e09c55d4eb336a8608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b235c077d324c45527cee213a48c1fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
②若改变
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcaf5cff829cbe4bea35089b25fa0cc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/2019/7/4/2239478643539968/2239525784854528/STEM/5974ce4cb7f5488692a37571f7b14822.png?resizew=447)
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