1 . 若第二象限内点P的坐标为
,则a的值可能( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11935a7973ef4f01b8c0ad6967399a60.png)
A.![]() | B.![]() | C.0 | D.1 |
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2 . 在同一平面直角坐标系内有
、
两点.点
在第二象限,且到
轴的距离为
,到
轴的距离为
;点
在第三象限.
(1)直接写出点
的坐标;
(2)求
的取值范围;
(3)连接
,且
垂直于
轴,求点
的坐标.
![](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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e726314ccd2d12a08a55387ef47f280e.png)
(1)直接写出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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3 . 直角坐标系
中,点
在第一象限,过点P分别向x、y轴作垂线段
、
,垂足为点A、B,连接
,则线段
的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e53c96fcaab19d7f2e4c06c376bef854.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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4 . 建立平面直角坐标系,在坐标系中描出下列各点,并写出各点所在的象限或坐标轴.
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1384a8b151f90958c4863a1f6a3cd2e.png)
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5 . 在平面直角坐标系中,已知点
.
(1)若
同号,则点
可能在哪些象限?
(2)若
异号,则点
可能在哪些象限?
(3)若
,则点
的位置有哪些可能情况?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17375498fcd71a15ba331cdbab76fc10.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2e647c14561826ba9e396acc5a3792c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2e647c14561826ba9e396acc5a3792c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34715101c66fa12ce6baf0a9c53f1672.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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6 . 在平面直角坐标系中,第一象限内的点
和在第四象限内的
,若满足:
,那么称点Q为点P的“影像点”,例如:点
的影像点为点
,点
的影像点为点
,如图,若点
在直线
上,当
时,存在点P的影像点Q,则
的最大值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/edce06fb-bb8d-434c-ad77-c5dff44f3835.png?resizew=222)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44ee82573986d4fa6a7ee1b5f397edae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60cf94b0739360ef5227eb286eb68d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42fa9c76b7bf4c2f10de3a597ca2d30d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/781b089662bf214668aae489bda55497.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2234eabaa7f119a3624e6370fb82c1eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/547ca949ea6f238f4e58dde990e0dbda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e2e6ad628a5a06829d7456de7a2d63e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90688751e58655291204fab149e744e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0e212cdbfba6610bc55df2c1a737407.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed8f2823d476f970d9c9168adeed217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13502d46b8563c54c09b29b20b3006a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/5/edce06fb-bb8d-434c-ad77-c5dff44f3835.png?resizew=222)
A.4 | B.![]() | C.5 | D.![]() |
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7 . 已知实数x,y,t,满足
,
.
(1)当
时,求y的值.
(2)若点
在第四象限,求t的取值范围.
(3)在(2)的条件下,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5795a3fb831d0062cb53c90510965e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c101e6886f3df3720038d4d6137d7816.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a79a33a83a7ba57a34b5093d1d1d02.png)
(3)在(2)的条件下,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d5a75cbffe857f8f13fe44259fdb30.png)
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8 . 下列说法是真命题的是( )
A.若![]() ![]() |
B.作线段![]() |
C.三角形的一个外角等于和它不相邻的两个内角的和 |
D.立方根等于本身的数是0和1 |
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9 . 已知点
.
(1)若点P在第二象限,求m、n的取值范围;
(2)若点P在一次函数
的图象上,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/250d34e07f9c00e009bfd8e799191443.png)
(1)若点P在第二象限,求m、n的取值范围;
(2)若点P在一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812eed46a589bde8b7c78a81a8cf9b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd1f0ace9ca0b79929e73af6c201c2e.png)
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10 . 在平面直角坐标系中,点
和
.
(1)如果点
在
轴上,点
在
轴上,求
、
的值;
(2)点
和点
是否能同在第三象限内,若能,求出
、
的范围,若不能,请说明理由;
(3)如果
轴,且
,求
、
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adf53e7678a6fe68a877870fb2849721.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb6228341017dc0377967c43d44fcd10.png)
(1)如果点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)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/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(3)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/548776b62e7a92e1b11f5aeaf4d52392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5886d4b31a8d7249d3eea076d1f40354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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