已知数轴上点
、点
对应的数分别为
、
,满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2573efcb32598579eb67241af502d7c.png)
(1)
______,
______;
(2)若点
以每秒5个单位长度的速度从点
出发沿数轴向右运动,点
以每秒2个单位长度的速度从点
出发沿数轴向右运动,求点
、点
同时出发,几秒后点
与点
相距4个单位长度?
(3)在(2)的条件下,点
以每秒4个单位长度的速度从原点出发沿数轴向右运动,求点
、点
、点
同时出发,几秒后点
到点
的距离与点
到点
的距离相等?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2573efcb32598579eb67241af502d7c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/13/2f55f6ff-d2d3-4d78-91d4-ed9058310ca5.png?resizew=133)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(3)在(2)的条件下,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
更新时间:2023-09-12 10:00:58
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解答题-问答题
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【推荐1】点A、B、C所表示的数如图所示,回答下列问题:
(1)A、B两点间的距离是多少?
(2)B、C两点间的距离是多少?
(1)A、B两点间的距离是多少?
(2)B、C两点间的距离是多少?
![](https://img.xkw.com/dksih/QBM/2019/11/13/2333058152357888/2336025727606785/STEM/e9b8e2ba991e4424af241369a479aceb.png?resizew=330)
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名校
【推荐2】阅读下面材料:点A、B在数轴上分别表示实数a、b,则A、B两点之间的距离可表示为
,
.
已知数轴上有两点M、N,其中点M表示的数为
,点N表示的数为3,若数轴上存在一点P,使
,则称点P为点M、N的“x节点”.例如:点P表示的数为0,有
,则称点P为点M、N的“7节点”.
请根据上述材料回答下列问题:
(1)若点P为点M、N的“x节点”,且点P在数轴上表示的数为
,求x的值;
(2)若点Q在数轴上,且点Q是点M、N的“10节点”,求出点Q表示的数;
(3)若点R在数轴上(不与点M、N重合),满足
,且此时点R为点M、N的“x节点”,求x.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2afd4acb164aad6d5a73989f5412730b.png)
已知数轴上有两点M、N,其中点M表示的数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a40f6cb7e8960655052561365b66ce56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c0d88a72dd53845e4151e13e26bb3a.png)
请根据上述材料回答下列问题:
(1)若点P为点M、N的“x节点”,且点P在数轴上表示的数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3aab28a20b5bf47040aaec03b1eb550.png)
(2)若点Q在数轴上,且点Q是点M、N的“10节点”,求出点Q表示的数;
(3)若点R在数轴上(不与点M、N重合),满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dfe6169ccc37206d551d132b7beef75.png)
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【推荐1】如图,平面直角坐标系中,
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/12/22/3136333753131008/3147149558505472/STEM/17aa9d8f8c0e4475944ecb42394bda12.png?resizew=527)
(1)求
的面积;
(2)如图
,点
以每秒
个单位的速度向下运动至
,与此同时,点
从原点出发,以每秒
个单位的速度沿
轴向右运动至
,
秒后,
、
、
在同一直线上,求
的值;
(3)如图
,点
在线段
上,将点
向右平移
个单位长度至
点,若
的面积等于
,求点
坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c240561788bc63f41a6703219fb66d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c09615735d331befd07664aa47cb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/541130d07517bebaee5f5577fe167023.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d965397732b87ae87421ecb27171fc08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9627364e800832b4b9779443eef6e62f.png)
![](https://img.xkw.com/dksih/QBM/2022/12/22/3136333753131008/3147149558505472/STEM/17aa9d8f8c0e4475944ecb42394bda12.png?resizew=527)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d7ffb7889a31b267a85f1ea238138e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51bff7ffe4b2650908f759868ea30898.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d7ffb7889a31b267a85f1ea238138e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51bff7ffe4b2650908f759868ea30898.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb49df05f2e31d005735c3f14a21d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/180ea775f2af05650404d764384e7faa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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【推荐2】(1)已知xy=﹣2,x+y=3,求整式(3xy+10y)+[5x﹣(2xy+2y﹣3x)]的值.
(2)先化简,再求值:
,其中x、y满足
(2)先化简,再求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9423dcce913b05ea4ab32f94cd884f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d1c82927deb4c02d686888fed92df4.png)
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【推荐1】小明和爸爸进行登山锻炼,两人从山脚下出发,沿相同路线匀速上山,小明用8分钟登上山顶,此时爸爸距离出发地280米,小明登上山顶立即按原路匀速下山,与爸爸相遇后,和爸爸一起以原下山速度返回出发地.小明、爸爸在锻炼过程中离出发地的路程y1(米)、y2(米)与小明出发的时间x(分)的函数关系如图,根据图象信息解答下列问题,
(1)图中a= ;b= ;c= .
(2)小明上山速度为 米/分;爸爸上山速度为 米/分,
(3)直接写出小明与爸爸何时相距30米.
(1)图中a= ;b= ;c= .
(2)小明上山速度为 米/分;爸爸上山速度为 米/分,
(3)直接写出小明与爸爸何时相距30米.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/35a23851-165a-43c0-b26f-9b1800f2cfc3.png?resizew=203)
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【推荐2】如图,数轴上A,B,C,D四个点对应的数分别是a,b,c,d,已知
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/13/d2923feb-1aef-495c-92f7-459cd6db1d38.png?resizew=493)
(1)直接写出a,b,c,d的值;
(2)如图(1),点M从A点出发,在线段
上以2个单位长度/秒的速度来回运动,点P从C点出发,以1个单位长度/秒的速度向左运动.t秒后,P与M相遇,即停止运动.求t的值;
(3)如图(2),以
为长,
的长为宽(B点为起点),将这个长方形在数轴上滚动.直接写出E点第3次落在数轴上对应的数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d012ba8b9e8fe5179c4da2900f838e94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d2530e7023b2345c651e8f53629ff1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/13/d2923feb-1aef-495c-92f7-459cd6db1d38.png?resizew=493)
(1)直接写出a,b,c,d的值;
(2)如图(1),点M从A点出发,在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(3)如图(2),以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
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