如图,在矩形ABCO中,点O为坐标原点,点B的坐标为(4,3),点A、C在坐标轴上,点P在BC边上,直线l1:y=2x+3,直线l2:y=2x﹣3.
(1)分别求直线l1与x轴,直线l2与AB的交点坐标;
(2)已知点M在第一象限,且是直线l2上的点,若△APM是等腰直角三角形,求点M的坐标;
![](https://img.xkw.com/dksih/QBM/2017/4/22/1671038824251392/1738278256435200/STEM/524a7cb536ac47158dec052c136c7ce3.png?resizew=192)
更新时间:2017-07-31 07:56:26
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【推荐1】如图,已知一次函数
的图象 与x轴、y轴分别交于点A,B,
![](https://img.xkw.com/dksih/QBM/2019/11/14/2333781801025536/2337387432624128/STEM/eac968bca3384cb0a2bc812000399a91.png?resizew=202)
(1)求点A,B的坐标;
(2)M为ー次函数y=x+3的图象上一点,若 △ABM与△ABO的面积相等,求点M的坐标;
(3)Q为y轴上的一点,若三角形ABQ为等腰三角形 ,请直接写出点Q的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e434a6fc177990ab7f2b604c111e1a.png)
![](https://img.xkw.com/dksih/QBM/2019/11/14/2333781801025536/2337387432624128/STEM/eac968bca3384cb0a2bc812000399a91.png?resizew=202)
(1)求点A,B的坐标;
(2)M为ー次函数y=x+3的图象上一点,若 △ABM与△ABO的面积相等,求点M的坐标;
(3)Q为y轴上的一点,若三角形ABQ为等腰三角形 ,请直接写出点Q的坐标.
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【推荐2】已知:如图,一次函数
的图象与反比例函数
的图象交于M,N两点,过点M作MC⊥y轴于点C,且CM=1,过点N作ND⊥x轴于点D,且DN=1,已知点P是x轴(除原点O外)上一点.
(1)直接写出M、N的坐标及k的值;
(2)将线段CP绕点P按逆时针旋转90°得到线段PQ,当点P滑动时,点Q能否在反比例函数的图象上?如果能,求出点Q的坐标;如果不能,请说明理由;
(3)当点P滑动时,是否存在反比例函数图象(第一象限的一支)上的点S,使得以P、S、M、N四个点为顶点的四边形是平行四边形?若存在,请直接写出所有符合题意的点S的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d3830397b665dcedbb3b77a4ba956e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
(1)直接写出M、N的坐标及k的值;
(2)将线段CP绕点P按逆时针旋转90°得到线段PQ,当点P滑动时,点Q能否在反比例函数的图象上?如果能,求出点Q的坐标;如果不能,请说明理由;
(3)当点P滑动时,是否存在反比例函数图象(第一象限的一支)上的点S,使得以P、S、M、N四个点为顶点的四边形是平行四边形?若存在,请直接写出所有符合题意的点S的坐标;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/9/d799c7b5-15cb-4753-8c36-2ba6b07a7b71.png?resizew=205)
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【推荐1】综合与实践:
问题情境:在综合与实践课上,老师让同学们以“矩形纸片的折叠”为主题开展数学活动.在矩形
中,
为
边上一点,
为
边上一点,连接
,分别将
和
沿
翻折,
的对应点分别为
,且
三点共线.
观察发现:
(1)如图1,若F为
边的中点,
,点G与点H重合,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee8ec5a6d46df6c070e239ae6d642a54.png)
__________ °,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32217457c4e96e2ef155cf15c1b65d97.png)
__________________ .
问题探究:
(2)如图2,若
,则点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
_________
边上(填“在或不在”),并求出
的长;
拓展延伸:
(3)
,若
为
靠近A的三等分点,请求出
的长.
问题情境:在综合与实践课上,老师让同学们以“矩形纸片的折叠”为主题开展数学活动.在矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b1342725d5ee89770b48a1175dbce82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfa1a2af7e38d33634c462300df381f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df7626240940eb340420a605e95aeee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b1342725d5ee89770b48a1175dbce82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa1735c008031004b8c387d1e1376978.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c0f067a2a348ceb24a408f82992eab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4071e871c2ca492a6d8003407a85929a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/14/b73e1c03-b059-471b-8075-5e1edce82cae.png?resizew=527)
观察发现:
(1)如图1,若F为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8618fe66f701cc00577a6f7d38d35e49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee8ec5a6d46df6c070e239ae6d642a54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32217457c4e96e2ef155cf15c1b65d97.png)
问题探究:
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1859054014d5dbabb8039da17332315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
拓展延伸:
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39cf618ea7f7832a10b329297a73518e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
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【推荐2】如图,平面直角坐标系中,已知点B在x轴正半轴上,点
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/2dacac9a-13de-4de8-aad2-70fe97c0dfba.png?resizew=366)
(1)把
绕着点A逆时针旋转
得到
,使点B的对应顶点D落在y轴上,求
的度数及C、D点坐标;
(2)求出点B旋转到点D所经过的路径长(结果保留π);
(3)点M是x轴上的一个点,以
为直径的圆交
边于点P,是否存在点M,使
是以
为腰的等腰三角形,若存在,求出点M的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcbc328ed803646d8646560050ed0ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3b136c45d114d9432aa492909cda4f2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/2dacac9a-13de-4de8-aad2-70fe97c0dfba.png?resizew=366)
(1)把
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abac49af241cc15c7834cd9627142627.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cba47906b1c55990f2c0ca31d656b774.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)求出点B旋转到点D所经过的路径长(结果保留π);
(3)点M是x轴上的一个点,以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3307e49ef1644ab46def7183a30b56eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
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【推荐3】如图,已知正方形ABCD的边长为4cm,动点P从点B出发,以2cm/s的速度沿B→C→D方向,向点D运动;动点Q从点A出发,以1cm/s的速度沿A→B方向,向点B运动.若P、Q两点同时出发,运动时间为t秒.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/5e03f70d-a644-44bd-a43e-25a0e21f0d9c.png?resizew=149)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/48fa559a-04e3-42bf-8785-9c1976ae1c46.png?resizew=141)
(1)连结PD、PQ、DQ,设△PQD的面积为S,试求S与t之间的函数关系式;
(2)当点P在BC上运动时,是否存在这样的t,使得△PQD是以PD为一腰的等腰三角形?若存在,请求出符合条件的t的值;若不存在,请说明理由;
(3)以点P为圆心,作⊙P,使得⊙P与对角线BD相切.问:当点P沿B→C→D运动时,是否存在这样的t,使得⊙P恰好经过正方形ABCD的某一边的中点?若存在,请直接写出符合条件的t的值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/5e03f70d-a644-44bd-a43e-25a0e21f0d9c.png?resizew=149)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/11/48fa559a-04e3-42bf-8785-9c1976ae1c46.png?resizew=141)
(1)连结PD、PQ、DQ,设△PQD的面积为S,试求S与t之间的函数关系式;
(2)当点P在BC上运动时,是否存在这样的t,使得△PQD是以PD为一腰的等腰三角形?若存在,请求出符合条件的t的值;若不存在,请说明理由;
(3)以点P为圆心,作⊙P,使得⊙P与对角线BD相切.问:当点P沿B→C→D运动时,是否存在这样的t,使得⊙P恰好经过正方形ABCD的某一边的中点?若存在,请直接写出符合条件的t的值.
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【推荐1】已知抛物线
与
轴相交于点
,
,且
,
是方程
的两个实数根,点C为抛物线与y轴的交点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/25/a7e5a635-989e-4662-b34a-6b1e7e4b422b.png?resizew=253)
(1)求a,b的值;
(2)分别求出直线
和
的解析式;
(3)若动直线
与线段
,
分别相交于D,E两点,则在x轴上是否存在点P,使得
为等腰直角三角形?若存在,求出点P的坐标:若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0d44326c214c7a5ecc3068a29ec96f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98ec3d75e53b990bc8f9a4622928dd21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ae7486a9ecc9fa47de8b07cbee9677.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8034dddd265a186e29172623e3b9eadf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/25/a7e5a635-989e-4662-b34a-6b1e7e4b422b.png?resizew=253)
(1)求a,b的值;
(2)分别求出直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(3)若动直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ee8b6d5526632161e70ac159d6c96a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4336efb6d0689ddad55295e336340d3.png)
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【推荐2】在矩形
中,点
是
边上一动点(不与
点重合),连接
的延长线交
的延长线于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/a8c05103-472a-43bd-a1ea-c82dd6b9ef9b.png?resizew=503)
(1)如图①.当
时,若
,求
的长;
(2)如图②,连接
,与
交于点
,当
时,有
,连接
,求证:
.
(3)如图③,
,将
沿直线
折叠,得到
.当射线
交线段
于点
时,连接
,当
最大时,直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ff20d6bc773444111e4df4fc3f55482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/a8c05103-472a-43bd-a1ea-c82dd6b9ef9b.png?resizew=503)
(1)如图①.当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bbd581a6cb2f8d43beba57b1152938e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94cb5b44517df598d2c3b3577e330013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(2)如图②,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33504c7ef3d0fc3b2d7849b1f998a063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/014fc52a56af557331b6f92c1de46a78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bccb356d636d7466293ee5e24f77d0e.png)
(3)如图③,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db5f2c8754eea2005603035e4880558d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f9fba8a4098c1a0515286eb8d616dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc6ca93d868b56ce9e2f752ec264eabb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
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