如图1,四边形
为正方形(四条边都相等,四个内角都是
),
平行于y轴.
,正方形
的边长为4,直接写出点A,C,D的坐标;
(2)如图2,已知
,
,点Q从C出发,以每秒2个单位长度的速度在线段
上运动,运动时间为t秒,若
.
①当
时,求
的面积;
②当
时,求t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a0387fc1258f31e44a10068c0ccfd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/015ce021d6c6df538a4263bf3561bc14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
(2)如图2,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/877313f6dd32b86e20b685887042e2a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/873c50c6d3fa2d00b7c328a438d86f65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66120398b62bf90fc1f0db9aff1c2fd5.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/717e5ded053d801848a0041a49e73953.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fdb8865ae357b7a16b6a30cf4a9e592.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e5c79175695eb27999ed385e4082900.png)
更新时间:2024-04-08 21:36:30
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解答题-应用题
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【推荐1】已知:数轴上点A,B,C表示的数分别为a,b,c,点O为原点,且a,b,c满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ce4570589ee74092838d5fc5e504587.png)
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①t为何值时,M,N重合,此时
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②t为何值时,点N到点M,R的距离相等.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ce4570589ee74092838d5fc5e504587.png)
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(1)直接写出a,b,c的值;
(2)如图1,若点M从点A出发以每秒1个单位的速度向右运动,点N从点B出发以每秒3个单位的速度向右运动,点R从点C出发以每秒2个单位的速度向右运动,点M.N.R同时出发,设运动的时间为t秒.
①t为何值时,M,N重合,此时
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/844c54a25beb71dbed81b39192c8479c.png)
②t为何值时,点N到点M,R的距离相等.
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【推荐2】利用所学知识完成下列问题:
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【推荐2】(1)已知实数a,b,c满足
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名校
【推荐1】如图,在平面直角坐标系中,直线AC交轴于点
,交直线
于点
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和线段
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/66a4782a-d4d2-4680-a078-b3d087870ca9.png?resizew=156)
(1)求直线
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859bf9cae1ba707d53066042073251f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/19/66a4782a-d4d2-4680-a078-b3d087870ca9.png?resizew=156)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/173bc7a36757d77f01213411edd25241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1470425447b3997a387908aa9e89de15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/173bc7a36757d77f01213411edd25241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
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解答题-作图题
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【推荐2】在如图所示的正方形网格中,每个小正方形的边长为1,格点三角形(顶点是网格线的交点的三角形)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ee6e1d480ece7117e1f87ebf4bbeea.png)
(3)顺次连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20e4d2401dc178b704fe7c22fb222d67.png)
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