如图,等边
的边长为4,M为
边的中点,动点P从B点出发,沿着
方向匀速运动,到点C时停止运动,过点P作
于点Q,设点P的运动路程为x,点M,Q的距离为y.
(2)在给定的平面直角坐标系中画出这个函数的图象,并写出该函数的一条性质:_______;
(3)结合函数图象,当
时,自变量x的取值范围为________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afff0d3ff003c5336cba7b7ebea9c54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adb1eec294df86f228440996ec2ae39e.png)
(2)在给定的平面直角坐标系中画出这个函数的图象,并写出该函数的一条性质:_______;
(3)结合函数图象,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60caa8d9ca3d5be52c92ae965405adde.png)
23-24八年级上·重庆沙坪坝·期末 查看更多[2]
重庆市南开中学校2023-2024学年八年级上学期期末数学试题(已下线)专题11 期末解答压轴题(九大题型)-【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(山东专用)
更新时间:2024-03-20 09:34:32
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相似题推荐
解答题-问答题
|
适中
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【推荐1】如图,在平面直角坐标系中,一次函数
的图象与反比例函数
的图象交于A、B两点,与x轴交于点C,过点A作
轴于点H,点O是线段
的中点,
,
,点B的坐标为
.
(1)求该反比例函数和一次函数的解析式;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e2e9221dc8db87d61fecc7c8d725f9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7385795d7eab9691e21172c51a97428.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7277dcfb480720f2f37413cb0d34d09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3407e83df0d037d628061f7a89b6b8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d834587fa4842ded7bae4b126cc4060.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd8e9b48a313e0ce8c0d0abdf5baec2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17cde8502f02e3aadfbb8ca207ba5240.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/26/1bba4e5f-bc90-4f1a-b99f-88569d335dfe.png?resizew=177)
(1)求该反比例函数和一次函数的解析式;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18223e6d92fc86012ec7355559cfdb7c.png)
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名校
【推荐2】如图,在平面直角坐标系中,直线y=kx+b与x轴、y轴分别交于点A(3,0)、点B(0,2),以线段AB为直角边在第一象限内作等腰直角三角形ABC,∠BAC=90°.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/14/7e8c1150-4f2e-4ca4-969d-598bf4a098d1.png?resizew=412)
(1)求直线y=kx+b的解析式;
(2)求出△ABC的面积;
(3)若P(1,m)为坐标系中的一个动点,连接PA,PB.当△ABC与△ABP面积相等时,求m的值.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/14/7e8c1150-4f2e-4ca4-969d-598bf4a098d1.png?resizew=412)
(1)求直线y=kx+b的解析式;
(2)求出△ABC的面积;
(3)若P(1,m)为坐标系中的一个动点,连接PA,PB.当△ABC与△ABP面积相等时,求m的值.
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解答题-问答题
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【推荐1】如图,已知一次函数
的图象与
轴、
轴分别交于点A、
,点
、
均在函数图象上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/e63b5420-52f5-43c3-b600-0a4731823fec.png?resizew=155)
(1)判断点
是否在直线
上,并说明理由;
(2)当
时,求
的取值范围;
(3)在
轴上是否存在点
,使得
的面积为3?若存在,请求出点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcc74b90d7d5652d81ee46a9856464a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/3/e63b5420-52f5-43c3-b600-0a4731823fec.png?resizew=155)
(1)判断点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4791294545bfa24ad7fdf7fb397e33cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11093d51b71f83d0c15886fd5fa826e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
(3)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da7bcea5a45eeae211f5851f12a7517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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解答题-作图题
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【推荐2】在平面直角坐标系 xOy 中,直线 y=2x+b 与 x 轴交于点(1,0),与一次函数 y
x 3的图象相交于点A.
(1)求b的值,并直接在图中画出这两个一次函数的图象(不写画图过程);
(2)求点A的坐标;
(3)若 P 是 x 轴的正半轴上一点,且满足
是等腰三角形,直接写出点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求b的值,并直接在图中画出这两个一次函数的图象(不写画图过程);
(2)求点A的坐标;
(3)若 P 是 x 轴的正半轴上一点,且满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532d9de08698f61d7c010805c61a4ec5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/20/d20b9c8e-0f13-418b-9411-b83974cb22a0.png?resizew=228)
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解答题-证明题
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适中
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【推荐1】如图,在四边形
中,
,
平分
,
,E为
中点,连接
.
为菱形;
(2)若
,求四边形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4189a0821a0ffab9dc171ecd279ba442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12143a06ed24558d8cc7ad39961d3e1f.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/d6bfad3f7e65188bcf7f62ea5acdbf4a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0df913c4b64a55d74ee33ddc555cbf4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6bfad3f7e65188bcf7f62ea5acdbf4a.png)
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解答题-证明题
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适中
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【推荐2】如图,
是等边三角形.点D是
边上一点(点D不与B,C重合),
,
,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/acd5e327-8a27-4f92-bf9b-71b7923eb664.png?resizew=239)
(1)判断
与
的位置关系,并证明;
(2)过D过
,垂足为G.用等式表示
,
与
之间的数量关系,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2d40d5cb59338d3cb1dd504bb12d107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b34233772c4c26d6669499d9b1f15a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/acd5e327-8a27-4f92-bf9b-71b7923eb664.png?resizew=239)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)过D过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4141ffb35249eab8a4fd5ffa2a50a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
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解答题-问答题
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适中
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【推荐3】如图,在Rt△ABC中,∠B=90°,AC=40cm,∠A=60°,点D从点C出发沿CA方向以4cm/秒的速度向点A匀速运动,同时点E从点A出发沿AB方向以2cm/秒的速度向点B匀速运动,当其中一个点到达终点时,另一个点也随之停止运动.设点D、E运动的时间是t秒(0<t≤10).过点D作DF⊥BC于点F,连接DE,EF.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/25/9b3a2d1a-91d1-49e0-a7d5-7b5c7507c675.png?resizew=153)
(1)四边形AEFD能构成菱形吗?如果能,求出相应的t值;如果不能,请说明理由;
(2)当t为何值时,△DEF为直角三角形?请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/25/9b3a2d1a-91d1-49e0-a7d5-7b5c7507c675.png?resizew=153)
(1)四边形AEFD能构成菱形吗?如果能,求出相应的t值;如果不能,请说明理由;
(2)当t为何值时,△DEF为直角三角形?请说明理由.
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解答题-证明题
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适中
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【推荐1】(1)【操作发现】如图①,D是等边
的边BA上一动点(点D与点B不重合),连接
,以
为边在
上方作等边
,连接
.线段
与
之间的数量关系是______.
(2)【类比猜想】如图②,当动点D运动至等边
边
的延长线上时,其他作法与(1)相同,猜想
与
在(1)中的结论是否仍然成立?并加以证明;
(3)【深入探究】如图③,当动点D在等边
边BA上运动时(点D与点B不重合),连接
,以
为边在
上方、下方分别作等边
和等边
,连接
,
,探究AF,
与AB有何数量关系?并证明你的探究的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13668f033d00acfc366f7e47949c4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)【类比猜想】如图②,当动点D运动至等边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(3)【深入探究】如图③,当动点D在等边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13668f033d00acfc366f7e47949c4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/609816ff89ecbb321d42b44ccc97247c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a60bbddc1f1e13ff48801917c503ad4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a60bbddc1f1e13ff48801917c503ad4.png)
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解答题-证明题
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适中
(0.65)
【推荐2】如图在平面直角坐标系中,点
的坐标为
),以线段
为边在第四象限内作等边三角形
,点
为
轴正半轴上一动点
,连接
,以线段
为边在第四象限内作等边三角形
,连接
并延长,交
轴于点
.
(1)求证:
;
(2)点
在运动过程中,
的度数是否发生变化?如果不变请求出
的度数,如果变化,请说明理由;
(3)当点
运动到什么位置时,以点
、
、
为顶点的三角形是等腰三角形?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f09c198edee307b297920652e9906919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dfaad4c4467e27421876d8f2a4371d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2afa1a34e954591ded8e5f6fc11515da.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5157b42da58d55daad27d98b2fec15ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5157b42da58d55daad27d98b2fec15ff.png)
(3)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/12/d6d2011b-a740-4c73-a5f6-14f7cce4d4ee.png?resizew=197)
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