已知一次函数y=-2x+3
(1)在给定坐标系中画出这个函数的图象;(列表,描点,连线);
(2)求该图象与x轴y轴的交点坐标.
(1)在给定坐标系中画出这个函数的图象;(列表,描点,连线);
(2)求该图象与x轴y轴的交点坐标.
![](https://img.xkw.com/dksih/QBM/2018/3/8/1897767424204800/1898000620240896/STEM/f84c9a2b45c5482aaff7990c6daf4523.png?resizew=202)
更新时间:2018-03-08 23:55:03
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【知识点】 一次函数图象与坐标轴的交点问题解读
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解答题-问答题
|
适中
(0.65)
【推荐1】如图1,在平面直角坐标系
中,直线
与
轴交于点
,与
轴交于点
.
(1)求
的面积.
(2)
为
延长线上一动点,以
为直角边作等腰直角三角形
,连接
.求直线
与
轴交点
的坐标.
(3)如图2,点
是
轴正半轴上一点,且
,
平分
,点
是射线
上一动点,点
是线段
上一动点,则当点
,
运动到什么位置时,
的值最小?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.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/42ef3c79fe49cb3ce8b520f65128eebf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74f1237b6aa22cec790e02a56d03ea74.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6765a87bcc2b6d44aabdee9af73e6cd2.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1642eec556eb252de9c1ab7bb5ca90b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1642eec556eb252de9c1ab7bb5ca90b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(3)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50a441ccced680d7b3a79e8b45d66ade.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a9ac0a7acd8f9e937610741313230e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.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/c7568f94905a2be51a2b33acbc471682.png)
![](https://img.xkw.com/dksih/QBM/2019/7/4/2239448088150016/2240231441317888/STEM/c98216151ffb44bf9dad7d4dec8da482.png?resizew=376)
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解答题-作图题
|
适中
(0.65)
【推荐2】如图,A,B是直线
与两坐标轴的交点,直线
过点A,与x轴交于点C.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/26/2e92fdb7-638e-4ff0-bb39-c1f82584f90e.png?resizew=518)
(1)求A,B,C三点的坐标;
(2)点D是折线
上一动点.
①如图(1),当点D是线段
的中点时,在y轴上找一点E,使
最小;用直尺和圆规画出点E的位置(保留作图痕迹,不要求写作法和证明),并求出点E的坐标;
②是否存在点D,使
为直角三角形,若存在,直接写出点D的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca621dc42304f844ac15dad7062d3959.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12f9bd7fdb0c44b5e2e1d5a59dd6f7dd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/26/2e92fdb7-638e-4ff0-bb39-c1f82584f90e.png?resizew=518)
(1)求A,B,C三点的坐标;
(2)点D是折线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaf7e4f327f981ed213dd90eeaae9d2b.png)
①如图(1),当点D是线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec842dcccc10512f00e977d691daee66.png)
②是否存在点D,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
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