1 . 小杰与爸爸骑车从家到公园先上坡后下坡,在这段路上小杰骑车的路程s(千米)与骑车的时间t(分钟)之间的函数关系如图所示,请根据图中信息填空:
(2)小杰去公园时上坡路长 千米;
(3)小杰下坡的速度为 千米/分钟;
(4)如果小杰回家时按原路返回,且上坡与下坡的速度不变,那么从公园骑车到家用的时间是 分钟.
(2)小杰去公园时上坡路长 千米;
(3)小杰下坡的速度为 千米/分钟;
(4)如果小杰回家时按原路返回,且上坡与下坡的速度不变,那么从公园骑车到家用的时间是 分钟.
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今日更新
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49次组卷
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3卷引用:河南省平顶山市金世纪中学2023-2024学年八年级下学期期中数学试题
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2 . 如图,一次函数
的图象与反比例函数
的图象交于
、
两点.
(2)观察图象,直接写出不等式
的解集;
(3)设直线
与x轴交于点C,若
为y轴上的一动点,连接
,当
的面积为3时,求点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ececd20089801c2228b63367418703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/646e11d5bff57e56ce82c2339f2d71ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c7f5020cbb68c3a738399a09c85353d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de9ebd1b3aa9c4b4abf67767b910440.png)
(2)观察图象,直接写出不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9c4a911fd570f0219aad3128584de1.png)
(3)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa9b82af17f238616fbee128bd89046.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e600ef0697e740639dc4ecfad0f8a1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9524e3810e06dc781285f1289e75d653.png)
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3 . 如图所示,平行四边形
和平行四边形
有公共边
,边
和
在同一条直线上,
且
=
,过点
作
交
于点
,交
于点
,连接
.
=
,
=
,求
的周长;
(2)求证:
=
+
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/779c26a41987ef67c2f09812c4f15ac4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbbce5e466ed2a070a405c588fc7e028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ff575e55857af133edb24c8e61504f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b46f46f56ccd10fd87a1dd8020656781.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8120f2eeb724c756b5f84a14c6df527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc8b62dc033d86ee9e561b8903796701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f79d7939c88e9702962e5917cad290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59b0c3bc854308c01e4a8bb5e0995620.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db7ea03277f8408fabe5b327cc34838f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc8b62dc033d86ee9e561b8903796701.png)
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4 . 解不等式组
并把它的解集在数轴上表示出来.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95f1ddd54034fc4e0739d733226b098e.png)
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2024七年级下·全国·专题练习
5 . (1)解不等式
,并把解在数轴上表示出来.
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38a03b87ecfb59c443bbf54e87da221f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53973ce5ea1ab36e5e2756fd7793c48a.png)
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6 . 解不等式组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301fc4f75a683bcdb492e4dfa2b9b37a.png)
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7 . 解不等式
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eb2ec8a87720a79638cf9e7b1fde11d.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/befe35cf7a4bef4f99498492ce8e0205.png)
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8 . 解下列不等式.
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/867c0a7af74218f854e3f58f026911f6.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b859cb2a6002d3f53326f2b006d16af.png)
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9 . 因式分解:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fde2701714f3afaf3fd551df8c33d768.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a41a377a84d0109e97bcaba0bc31ea.png)
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