如图,已知数轴上点A表示的数为8,B是数轴上位于A点左侧一点,且AB=14.动点P从点A出发,以每秒5个单位长度的速度沿数轴向左匀速运动,设运动时间为t秒.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/23/ba86ab7d-ff06-42ad-b7c1-061ec68ed4d1.png?resizew=337)
(1)写出数轴上点B表示的数______,点P表示的数______(用含t的式子表示);
(2)动点Q从点B出发,以每秒3个单位长度的速度向左匀速运动,且点P,Q同时出发.
①问点P运动多少秒时,BQ=BP?
②若M为AP的中点,在点P,Q运动的过程中,
的值在某一个时间段t内为定值.求出这个定值,并直接写出t在哪一个时间段内.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/23/ba86ab7d-ff06-42ad-b7c1-061ec68ed4d1.png?resizew=337)
(1)写出数轴上点B表示的数______,点P表示的数______(用含t的式子表示);
(2)动点Q从点B出发,以每秒3个单位长度的速度向左匀速运动,且点P,Q同时出发.
①问点P运动多少秒时,BQ=BP?
②若M为AP的中点,在点P,Q运动的过程中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56cd2c554e76a65ba4e9e9dadc2552f7.png)
21-22七年级上·湖北武汉·期末 查看更多[6]
湖北省武汉市硚口区2021-2022学年七年级上学期期末数学试题(已下线)七年级上学期期末【压轴82题考点专练】-2022-2023学年七年级数学上学期考试满分全攻略(人教版)广东省广州市越秀区省实实验学校2022-2023学年七年级上学期期末考试数学试题(已下线)期末押题预测卷(考试范围:七上全册)-2022-2023学年七年级数学上册重难题型全归纳及技巧提升专项精练(人教版)(已下线)期末押题预测卷03(考试范围:七上全册)-2022-2023学年七年级数学上册重难题型全归纳及技巧提升专项精练(北师大版)广东省广州市黄埔区2022-2023学年七年级下学期开学统考数学试题
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【推荐1】在数轴上,点M和点N分别表示数
和
,可以用绝对值表示点M、N两点间的距离
,
.
(1)在数轴上,点A、B、C分别表示数
、2、x,解答下列问题:
①
______;
②若
,则x的值为______;
③若
,且x为整数,则x的取值有______个.
(2)在数轴上,点D、E、F分别表示数
、4、6.
①动点P在数轴运动.动点P在数轴上表示的数是x,则
的最小值为______;
②动点P沿数轴从点D开始运动,到达F点后立刻返回,再回到D点时停止运动.在此过程中,点P的运动速度始终保持每秒2个单位长度.当点P的运动时间为______秒时,
.
![](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/57d7224242ab75080dfb394a39ebf7f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44bf1f0454337d7bf288b165e1f1c520.png)
(1)在数轴上,点A、B、C分别表示数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5267ff7ce5aa65879b770aa1990c0a7.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78594ffdc226620b85bce3c7786be3fc.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5a2c31c89b9baf3e9ac466e435183e.png)
(2)在数轴上,点D、E、F分别表示数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
①动点P在数轴运动.动点P在数轴上表示的数是x,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280b27caff74121362233f3c01dde612.png)
②动点P沿数轴从点D开始运动,到达F点后立刻返回,再回到D点时停止运动.在此过程中,点P的运动速度始终保持每秒2个单位长度.当点P的运动时间为______秒时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/101ba8c766e22b5db952332fac1bb3d2.png)
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【推荐2】如图,已知数轴上点
表示的数为
,
是数轴上位于点
左侧一点,且点
与点
的距离为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/10/89d6c52c-55d9-4e1b-809d-3bec65302104.png?resizew=163)
(1)写出数轴上点
表示的数__________;
(2)
表示
与
之差的绝对值,实际上也可理解为
与
两数在数轴上所对的两点之间的距离.
如
的几何意义是数轴上表示有理数
的点与表示有理数
的点之间的距离.试探索:
若
,则
__________;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.png)
的最小值为__________.
(3)动点
从
点出发,以每秒
个单位长度的速度沿数轴向右匀速运动,设运动时间为
秒,当
__________,点
,
两点之间的距离为
;
(4)动点
,
分别从
,
两点,同时出发,点
以每秒
个单位长度沿数轴匀速运动,
点以
个单位速度,沿数轴匀速运动,设运动时间为
秒.当
,
之间的距离为
时,则
的值为__________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e60fbe6820130fb20abc555a94b5ea.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/10/89d6c52c-55d9-4e1b-809d-3bec65302104.png?resizew=163)
(1)写出数轴上点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4adb0fe30e6a27e2d212536fd76fafc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
如
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec2b0af17241d77dc875ce0ad97ef7a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31562c66e57c5a0940ed3e8e2aaea4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/678ca4f156bb4bea3cbcb577b522afa1.png)
(3)动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
(4)动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf4b43b6792b9ae78a1c8cae4e60524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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【推荐1】阅读理解:小红和小明在研究绝对值的问题时,碰到了下面的问题:
“当式子
取最小值时,相应的x取值范围是 ,最小值是 ”.
小红说:“如果去掉绝对值问题就变得简单.”
小明说:“利用数轴可以解决这个问题.”
他们把数轴分为三段:
,
和
,经研究发现,当
时,值最小为3.请你根据他们的解题解决下面的问题:
(1)
(2)若
,则
就化简为
(3)解决问题:
①当式子
取最小值时,相应
,最小值是 .
②已知
,求相应的x的取值范围及y的最大值,写出解答过程.
“当式子
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40cfb936d8d761ccbe51b7892bd898a7.png)
小红说:“如果去掉绝对值问题就变得简单.”
小明说:“利用数轴可以解决这个问题.”
他们把数轴分为三段:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da6d82d173ad18cc040e94c925b5ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a12a30935c79ae769818043a496f53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a12a30935c79ae769818043a496f53.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9516d7f1274d35166f627f033b21f54c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200849ce71f53c0321506e27de437b8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70b4feb90b84eb54fe644c596f5156a1.png)
(3)解决问题:
①当式子
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e09223b3f60b464d620d3cd9b84a1c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
②已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1ebc96d1ca9e9343999d4429c351712.png)
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【推荐3】数轴是初中数学的一个重要工具,利用数轴可以将数与形完美结合.通过研究数轴,我们发现了许多重要的规律,比如:数轴上点A和点B表示的数为a,b,则A,B两点之间的距离
,若
,则可化简为
.请你利用数轴解决以下问题:
(1)已知点P为数轴上任一动点,点P对应的数记为m,若点P与表示有理数
的点的距离是3个单位长度,则m的值为______;
(2)已知点P为数轴上任一动点,点P对应的数记为m,若数轴上点P位于表示
的点左侧,则
______;
(3)已知点A,B,C,D在数轴上分别表示数a,b,c,d,四个点在数轴上的位置如图所示,若
,
,
,则
等于______.
(4)若
,
,
,
,
,则式子
的最小值为______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2afd4acb164aad6d5a73989f5412730b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64deec0e17271499a9742c9bdbb2ee8a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/9/1e891301-c0e6-442a-8c83-b67f20cee5f3.png?resizew=190)
(1)已知点P为数轴上任一动点,点P对应的数记为m,若点P与表示有理数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
(2)已知点P为数轴上任一动点,点P对应的数记为m,若数轴上点P位于表示
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d13ce3ebd1112220c639562739f1f9d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6e60b195d263bc3e8274412c2d80964.png)
(3)已知点A,B,C,D在数轴上分别表示数a,b,c,d,四个点在数轴上的位置如图所示,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56ea2750a5a4cbc1505ba5e77be1a904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f9c425b55c08f148e6df0965b726a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81624acf5dd64f2b045fb3c8ba4b589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/176400fc97133ee3a7bba932544318ea.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/9/924b864a-f1f4-4096-96bd-f00bafc131c6.png?resizew=233)
(4)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15d00e896ece0bec6845cdf25235bcbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1b21cae6f2bcb919420b760941a7751.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe0d34b855471c49f486034ea0ce9291.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15019e0630d25b3dd80f1a0c11cf3fa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67288e313db087d6aebbb654178dacbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db7aa88ff142d785138a7c80ff869b54.png)
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【推荐1】已知点A在数轴上对应的数为a,点B对应的数为b,且
,A、B之间的距离记作
,定义:
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/05a1c870-c575-4d01-9cfe-4d287581cb27.png?resizew=283)
(1)求线段AB的长
______;
(2)如图,点M,N,P是数轴上的三点,点M表示的数为4,点N表示的数为
,动点P表示的数为x.
①若点P在点M、N之间,则
______;
②若
,则
______;
③若点A,B分别从点M,N同时出发,点A以每秒1个单位长度的速度沿数轴向左匀速运动,点B以每秒2个单位长度的速度沿数轴向右匀速运动,设运动时间为t(
)秒.求t为何值时,点A与B相距3个单位长度?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/427b3dc14a8bb439d45da06a65f87ae2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b60a6e9515c220c8554719e399ec47.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/05a1c870-c575-4d01-9cfe-4d287581cb27.png?resizew=283)
(1)求线段AB的长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bee8e70f1fab639be1636c7bce0477.png)
(2)如图,点M,N,P是数轴上的三点,点M表示的数为4,点N表示的数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
①若点P在点M、N之间,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e093018d5ac8c8bee584b70c4fd8c629.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a4f08df1be8c8ef14d7f76d300dc69d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
③若点A,B分别从点M,N同时出发,点A以每秒1个单位长度的速度沿数轴向左匀速运动,点B以每秒2个单位长度的速度沿数轴向右匀速运动,设运动时间为t(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fff6e7e2b9f2b68b1647f6350b98dc8.png)
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【推荐2】(1)尝试:比较下列各式的大小关系:(用
填空)
①
___________
; ②
_________
;
③
_________
; ④
__________
;
(2)归纳:观察上面的数量关系,可以得到:
___________
(用
填空)
(3)应用:利用上面得到的结论解决下面问题:
若
=16,
=2,则
=______________.
(4)拓展:当
满足什么条件时,
>
(请直接写出结果,不需过程)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4839bb5693f7acf9fab4b57fa2fd2c12.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd825724f307ff0ac97f3142a3ab303.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/928e6768882cb34775f72fc0bca684d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53d768b234a0fe617b4c33279eae1317.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/988003f6f46eb8d0dd6d5f83a5512c91.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7381d917a2941ded9d6bd941a6881ead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/386b42b9be0cdc7f1a03280dd9117d1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d43a43e332c4ea84f6cd53ec7a7458b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/559153c10a3575aa5f1e9abbd2e0953d.png)
(2)归纳:观察上面的数量关系,可以得到:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed4bd51878a0eae716791cdfa4312bf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b33ceacb7836ccd98815e08a20cd2be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4839bb5693f7acf9fab4b57fa2fd2c12.png)
(3)应用:利用上面得到的结论解决下面问题:
若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a16ba5703144ad8d4e85a2febd8afff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfcaac202f779a1528f7f0d7e1b02ac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(4)拓展:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f5573b30734d65648f61c0a94c98de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3697b04b4b7bdd6c42b62b0ae7b6c3dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5feddda563240dc1aa433a606f85ed19.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
解题方法
【推荐1】已知数轴上三点
,
,
对应的数分别为
,0,3,点
为数轴上任意一点,其对应的数为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/c8e32d0d-b4b0-4c2b-8396-436a12f88d80.png?resizew=305)
(1)如果点
到点
、点
的距离相等,那么
的值是______.
(2)数轴上是否存在点
,使点
到点
、点
的距离之和是8?若存在,求出
的值;若不存在,请说明理由.
(3)如果点
以每分钟1个单位长度的速度从点
向右运动,同时另一点
从点
以每分钟2个单位长度的速度向左运动.设
分钟时点
和点
到点
的距离相等,则
的值为______.(直接写出答案)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/c8e32d0d-b4b0-4c2b-8396-436a12f88d80.png?resizew=305)
(1)如果点
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)数轴上是否存在点
![](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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)如果点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
解题方法
【推荐2】如图,在平面直角坐标系中,已知
三点,其中a、b、c满足关系式
.
(1)求a、b、c的值.
(2)如果在第二象限内有一点
,请用含m的式子表示四边形
的面积.
(3)在(2)的条件下,是否存在点P,使四边形
的面积与
的面积相等?若存在,求出点P的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f7ee991fe6cc320ca646bbbfae8265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/337e219506946d62a8e75e82cbffd9c0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/12/a310e599-3c0b-42f4-b209-e5d1c4111317.png?resizew=172)
(1)求a、b、c的值.
(2)如果在第二象限内有一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc6a4170d72b31689cd93c5a15093458.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/704d08fe16b2be56a17340ec0342ae8e.png)
(3)在(2)的条件下,是否存在点P,使四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/704d08fe16b2be56a17340ec0342ae8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次