结合数轴与绝对值的知识回答下列问题:
数轴上表示5和2的两点之间的距离是
;表示
和2两点之间的距离是
;一般地,数轴上表示数m和数n的两点之间的距离等于
.
(1)数轴上1和
的距离是 ;如果表示数a和
的两点之间的距离是3,那么
.
(2)若数轴上表示数a的点位于
与2之间,则
.
(3)当
时,
的值最小,最小值是 .
(4)若式子
,则
的最大值是 .
数轴上表示5和2的两点之间的距离是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac960734bba8815c6291f2d09a9bb37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31bacb70544fead98e3c3ad054fd8c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae9dd56551121a5b88be4dc6910c9ec0.png)
(1)数轴上1和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
(2)若数轴上表示数a的点位于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e1c512847ceb3c321e94a37396f082d.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31866675228f2f8046d6194c050744db.png)
(4)若式子
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f00133e7436c504761b30a60e5246734.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/059d6df06a5b85848dc4fa33327f8e07.png)
更新时间:2023-12-10 18:12:22
|
相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】已知
是关于
的二次二项式,
,
是数轴上两点,且
,
对应的数分别为
,
.
(1)
点对应的数
___________,
点对应的数
___________,线段
___________.
(2)若小虫甲到点
后就沿着数轴以每秒
个单位的速度向右爬行,同时另两只小虫乙、丙分别从点
和点
出发向右爬行,乙的速度是每秒
个单位,丙的速度是每秒
个单位,假设三个小虫同时运动秒后,甲、乙、丙三只小虫对应的点分别是
、
、
.若三只小虫都沿着数轴向右爬行,则
是定值吗?如果是,请求出这个定值.
(3)如图,在数轴上方从点
出发引出射线
,
,
,
,且
平分
,
平分
,已知
,
,当
绕着点
以
/秒的速度逆时针旋转
秒(
)时,
和
中的一个角的度数恰好是另一个角度数的两倍,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d6a8f5ebc1fa25b9df42b32fafb3f1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](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/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://img.xkw.com/dksih/QBM/editorImg/2023/6/9/eecc86db-9c4c-4782-9cbd-15502f85625c.png?resizew=421)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
(2)若小虫甲到点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/a298cc373837892910970160e1cfadd5.png)
(3)如图,在数轴上方从点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb8eca20ce2c918ea4034ea15210c7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db866ecc0c098bfc32ec8a43b65bdd58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7769187d9c090ef2e7d77ae350c5cbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce5c56744199b7aee365f52c8c251192.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1384d0a02d097ac7aa8a19e8da6f9767.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1653dd6d530c2e15ef1f073760ae5ad7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14a53d067b37db13ee14a64b4b75ad00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752fa646a2d9cfca34001748445301c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31123a003f9c8be58e0d78399e43c14a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/9/f9b0a15c-47b0-4105-bdda-0c62fed8a379.png?resizew=532)
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【推荐2】已知数轴上A、B、C三个点对应的数分别是a,b,c,且
;动点P从C点出发,向右移动,速度为1个单位长度/秒,设移动时间为t秒.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/30/2d9b9d48-c3e1-4a9f-8ac7-aa28aa5ba0fe.png?resizew=327)
(1)求a,b,c的值;
(2)以
为长,
为宽,作出长方形
,其中M与A重合,N与B重合(如图所示),将这个长方形总绕着右边的端点不断滚动(无滑动),求E点第3次落在数轴上对应的数字;
(3)将(2)中的长方形
,M与A重合,N与B重合时开始计时,该长方形以2个单位长度/秒的速度向左移动.当N点与C点重合时,立即返回向右移动,当M点与A点重合时,立即返回向左移动,N点再次到达C点时停止,整个过程中速度保持不变,当P点与M点相遇时,求t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe4c951f227cc82f714fc7fc935ed066.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/30/2d9b9d48-c3e1-4a9f-8ac7-aa28aa5ba0fe.png?resizew=327)
(1)求a,b,c的值;
(2)以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aba63d391602d0798a1875da35fef40d.png)
(3)将(2)中的长方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aba63d391602d0798a1875da35fef40d.png)
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【推荐3】阅读理解:如图,
,
,
为数轴上的三点,若点
到
的距离是点
到
的距离的
倍,我们就称点
是【
】的好点.例如,如图
,点
表示的数为
,点
表示的数为
.表示数
的点
到点
的距离是
,到点
的距离是
,那么点
是 【
】 的好点;又如,表示数
的点
到点
的距离是
,到点
的距离是
,那么点
就不是【
】的好点,但点
是【
】的好点.
知识运用:如图
,
,
为数轴上两点,点
所表示的数为
,点
所表示的数为
.
(1)数 所表示的点是【
】的好点.
(2)现有一只电子蚂蚁
从点
出发,以每秒
个单位的速度沿数轴向左运动,运动时间为
,当
为何值时,
,
,
中恰好有一个点为其余两点的好点?
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](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/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/599d0a99da76697d7f4a465a2e23693e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/16/1bf3a314-9b72-4b6b-b279-49516719758b.png?resizew=283)
知识运用:如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/16/c3a90949-4d2b-453d-9019-be123e9e0e4e.png?resizew=289)
(1)数 所表示的点是【
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
(2)现有一只电子蚂蚁
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
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【推荐1】已知有理数 a、b、c 满足:|a|=5,b2=81,c3=-125,且|a+b|≠a+b
(1) 分别求出 a、b、c 的值
(2) 求 5(3ab2-a2b)-3(a2b+5ab2)的值
(3) 请直接写出满足等式|x+b|-|x+c|=b-c 的 x 的取值范围.
(1) 分别求出 a、b、c 的值
(2) 求 5(3ab2-a2b)-3(a2b+5ab2)的值
(3) 请直接写出满足等式|x+b|-|x+c|=b-c 的 x 的取值范围.
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名校
【推荐2】对于有理数
,
,定义一种新运算“
”规定
.
(1)计算
的值;
(2)已知
,求
的值.
![](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/091e86ca89e484b331fd90125a5e5af3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39f90575b45d5f507f5e397ce994f96d.png)
(1)计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a46dec257a467d4b070686443c69f20f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff528c38a2c59bfee734c29859d262fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解答题-应用题
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【推荐1】某农户2020年承包荒山若干亩,投资7800元改造后,种果树2000棵.今年水果总产量为36000千克,此水果在市场上每千克售
元,在果园每千克售
元(
).若该农户将水果拉到市场出售平均每天出售1000千克,需8人帮忙,每人每天付工资100元,农用车运费及其他各项税费平均每天300元.
(1)当
,
时,农户在水果市场或在果园中出售完全部水果的总收入分别是多少元?
(2)用
,
分别表示农户在水果市场或在果园中这两种方式出售完全部水果的纯收入?(纯收入
总收入
总支出)
(3)若
,
且
是整数,若两种出售水果方式都在相同的时间内售完全部水果,试讨论当
为何值时,选择哪种出售方式较好.
![](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/4d5556dd86322752a457b3a6ba979c80.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
(2)用
![](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/6706fe00b4e231e62d9ecbec567d526b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b700fa9aeb1016aa71f76e4b6bb212e.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c06bbdd405ddef80942a282021f2357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47f53a8137ab0278532569367562429b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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【推荐2】有这样一道题,“已知
,
,求当
时多项式
的值”,某同学正确化简了
,但是代入计算时把
错抄成
,但他作出的结果却是正确的,求a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e14b229fe4f089fc668e8996787fe95f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d8f1c3036706a861a3504e87841535.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba53065eb180a682305fddb95d14b62f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13c8573cf2fff14ab3c22a56536d8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13c8573cf2fff14ab3c22a56536d8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba53065eb180a682305fddb95d14b62f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
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【推荐3】结合数轴与绝对值的知识回答下列问题:
数轴上表示4和1的两点之间的距离是3,而
;表示
和2两点之间的距离是5.
而
;表示
和
两点之间的距离是3,而
.
一般地,教轴上表示数m和数n的两点之间的距离为
.
(1)数轴上表示数
的点与表示
的点之间的距离为_____:
(2)数轴上表示数a的点与表示
的点之间的距离表示为_______;
(3)若数轴上b位于
与5之间,则
_________;
(4)若
,则
_______;
(5)已知a,b为整数,满足
,且
,则整数a的最小值是_______;
数轴上表示4和1的两点之间的距离是3,而
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c44a78ae6a347796722cebd5c58bc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
而
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31bacb70544fead98e3c3ad054fd8c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a94acdfb41489d5694b5a64b9e99754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb853b6ff3f1846b4cd3ae17fd35f5b6.png)
一般地,教轴上表示数m和数n的两点之间的距离为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae9dd56551121a5b88be4dc6910c9ec0.png)
(1)数轴上表示数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a94acdfb41489d5694b5a64b9e99754.png)
(2)数轴上表示数a的点与表示
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01317332a203c898536b1d0459f51d23.png)
(3)若数轴上b位于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93ca6f1734a88ac7ec560851541aa933.png)
(4)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f957daee24d43f1781570f575f6bda76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2333fd3b465b95625b1355aaf104e47.png)
(5)已知a,b为整数,满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ca5da1b8b37c97303a31a90316a0598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
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名校
【推荐1】数轴上给定两点A、B,点A表示的数为-1,点B表示的数为3,若数轴上有两点M、N,线段
的中点在线段
上(线段
的中点可以与A或B点重合),则称M点与N点关于线段
对称,请回答下列问题:
(1)数轴上,点O为原点,点C、D、E表示的数分别为-3、6、7,则点_____与点O关于线段AB对称;
![](https://img.xkw.com/dksih/QBM/2022/11/24/3116564726702080/3117789308059648/STEM/de160483acb748f098b1c5040a3904b0.png?resizew=451)
(2)数轴上,点F表示的数为x,G为线段
上一点,若点F与点G关于线段
对称,则x的最小值为______,最大值为______;
(3)动点P从-9开始以每秒4个单位长度,向数轴正方向移动时,同时,线段
以每秒1个单位长度,向数轴正方向移动,动点Q从5开始以每秒1个单位长度,向数轴负方向移动;当P、Q相遇时,分别以原速立即返回起点,回到起点后运动结束,设移动的时间为t,则t满足______时,P与Q始终关于线段
对称.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(1)数轴上,点O为原点,点C、D、E表示的数分别为-3、6、7,则点_____与点O关于线段AB对称;
![](https://img.xkw.com/dksih/QBM/2022/11/24/3116564726702080/3117789308059648/STEM/de160483acb748f098b1c5040a3904b0.png?resizew=451)
(2)数轴上,点F表示的数为x,G为线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)动点P从-9开始以每秒4个单位长度,向数轴正方向移动时,同时,线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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【推荐2】如图,在长方形ABCO中,点O为坐标原点,点B的坐标为(8,6),点A,C在坐标轴上,直线y=2x+b经过点A且交x轴于点F.
![](https://img.xkw.com/dksih/QBM/2020/9/15/2550319293702144/2555504461996032/STEM/f5fe1befb48e4316a6b8af0eb02d3e02.png?resizew=330)
(1)求b的值和△AFO的面积;
(2)将直线y=2x+b向右平移6单位后交AB于点D,交y轴于点E;
①求点D,E的坐标;
②动点P在BC边上,点Q是坐标平面内第一象限内的点,且在平移后的直线上,若△APQ是等腰直角三角形,求点Q的坐标.
![](https://img.xkw.com/dksih/QBM/2020/9/15/2550319293702144/2555504461996032/STEM/f5fe1befb48e4316a6b8af0eb02d3e02.png?resizew=330)
(1)求b的值和△AFO的面积;
(2)将直线y=2x+b向右平移6单位后交AB于点D,交y轴于点E;
①求点D,E的坐标;
②动点P在BC边上,点Q是坐标平面内第一象限内的点,且在平移后的直线上,若△APQ是等腰直角三角形,求点Q的坐标.
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