如图,在平面直角坐标系中,直线l与函数
(
,
)的图像交于A、B两点,与x轴交于C点,若
,且
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09cf17ee13e937cd8b84879da17d15b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94ec371d5dbc19d236bf8a1f084031e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98f11470b8d9a06f916120f20adffb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-04-24 12:34:53
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【推荐1】在实数范围内因式分解
,下列四个答案中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f01cb8d762a1e6d13c3b34ce48e5de82.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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【推荐2】已知a是一元二次方程2x2﹣2x﹣1=0较大的实数根,那么a的值应在( )
A.3和4之间 | B.2和3之间 | C.1和2之间 | D.0和1之间 |
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【推荐1】近年来,盲盒受到越来越多人关注.某公司生产一种盲盒,在自动售卖机销售,物价局规定,这种盲盒的市场销售单价不得高于
元,不得低于
元.经市场调查发现,当盲盒的销售单价不高于
元和高于
元时,每月销售量与销售单价分别满足某种函数关系.下表是部分市场调查数据:
设该种盲盒的月销售量为y盒,销售单价为x元,则y与x之间满足的函数关系式可以为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e6f1af4b44b2e97e8f319bab4ae9010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba505969331b28f0e2d3047d49988914.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b72ac611ae66b86761e080761d9aabc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b72ac611ae66b86761e080761d9aabc.png)
销售单价/元 | ||||||
月销售量/盒 |
A.![]() | B.![]() |
C.![]() | D.![]() |
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【推荐2】如图,在平面直角坐标系中,点
、
均在反比例函数
的图象上,若
的面积为8,则k的值为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/114a8cdc9744baa4ea9f8395b1b81d12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90c60b69e0c148d1e7ee1a13458e3b7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/412de93a9a3a2dfbb727b793453c4196.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/6/159aacfe-d250-4939-93ab-6dd986bab792.png?resizew=144)
A.3 | B.6 | C.9 | D.12 |
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【推荐1】如图,抛物线
与
轴交于A、B两点(A在B的左侧),与
轴交于点C,点P是抛物线上位于
轴上方的一点,连接AP、BP,分别以AP、BP为边向△ABP外部作正方形APED、BPFG,连接BD、AG.点P从点A运动到点B的过程中,△ABD与△ABG的面积和的变化情况是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/48bd7cce-70ce-4b7e-8c30-b4c9d2e9810d.png?resizew=257)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/479fcdeb57ba0e34120f2ced5ea1007a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fcf9bfbf771cb6118f8e631724314e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/48bd7cce-70ce-4b7e-8c30-b4c9d2e9810d.png?resizew=257)
A.先增大后减小 | B.先减小后增大 |
C.始终不变 | D.一直增大 |
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【推荐2】小曲在一个科学实验课上学习了发声物体的振动实验后,对其作了进一步的探究:在一个支架的横杆点
处用一根细绳悬挂一个小球
,小球
可以自由摆动,如图,
表示小球静止时的位置.当小明用发声物体靠进小球时,小球从
摆到
位置,此时过点
作
于点
,当小球摆到
位置时,
与
恰好垂直(图中的
均在同一平面上),过点
作
于点
.现已知
,测得
,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a67bb733403810fa80c0d758e537645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/513f65e4f392a4f62ee59ba7b6904b4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dec44a1f53ea3b2f972012ec84ce0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a84431a7f271306cb1cf563f8c86aa03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/700d946aa8e33e2215f20586cb6ff923.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
A.![]() | B.![]() | C.![]() | D.无法确定 |
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【推荐1】如图,在菱形
中,
,
,
,则
的值是( )
![](https://img.xkw.com/dksih/QBM/2018/9/29/2042895108775936/2044311012671488/STEM/b1fce05526434d6f8218a670dc8ad419.png?resizew=139)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a34a1a0354e836d4c88eeb7d2589283.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd4ab4c5dc711fa7330289d5c1e5a7fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c659f4d463bede2093c01a4f5aae8a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eacc5821c4fd9e228f98e40a290de497.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/228dcd91207d1fbdd713535d838eb79f.png)
![](https://img.xkw.com/dksih/QBM/2018/9/29/2042895108775936/2044311012671488/STEM/b1fce05526434d6f8218a670dc8ad419.png?resizew=139)
A.![]() | B.2 | C.10![]() | D.![]() |
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【推荐2】如图,在3×4的正方形网格图中,小正方形的边长为1,
的顶点均在格点上,则下列关于
的说法不正确的是( )
![](https://img.xkw.com/dksih/QBM/2021/5/25/2728843970387968/2729407292981248/STEM/b867541f-8851-4a20-9c63-78fcdea16bf2.png?resizew=261)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/2021/5/25/2728843970387968/2729407292981248/STEM/b867541f-8851-4a20-9c63-78fcdea16bf2.png?resizew=261)
A.是直角三角形 | B.![]() | C.面积为4 | D.![]() ![]() |
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