题型:解答题-问答题
难度:0.65
引用次数:97
题号:13271384
如图,直线
与坐标轴交于点A,B,该直线上的点P到x轴,y轴的距离分别为
,
.
![](https://img.xkw.com/dksih/QBM/2021/5/12/2719628093177856/2736362150551552/STEM/2bf09b29-8f94-48d3-872e-c520d1807759.png)
(1)若点P为
的中点,求
的值
(2)点P在射线
上,若
,求点P横坐标x的范围.
(3)若在线段
上存在无数个P点,使
为常数,求m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c6b28d3832f748441f80e9880bfa656.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5edf900c810371fb21297c15f86d8743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31ac1def558351e2e3ed1235c570530.png)
![](https://img.xkw.com/dksih/QBM/2021/5/12/2719628093177856/2736362150551552/STEM/2bf09b29-8f94-48d3-872e-c520d1807759.png)
(1)若点P为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a90cddda4803df53f56ee8ae41d40e6.png)
(2)点P在射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cd3597762b3dcecd014fdfe7f70fa67.png)
(3)若在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e46e7bfe83d6166dc81558dead0334f5.png)
更新时间:2021-06-05 11:25:57
|
【知识点】 几何问题(一次函数的实际应用)解读
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解答题-问答题
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适中
(0.65)
【推荐1】因为一次函数
与
的图象关于
轴对称,所以我们定义:函数
与互为
“镜子”函数.
(1)请直接写出函数
的“镜子”函数:________.
(2)如图,一对“镜子”函数
与
的图象交于点
,分别与
轴交于
两点,且AO=BO,△ABC的面积为
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c201ec9d9d6b1d37a53060d0d349ca0.png)
(1)请直接写出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a026fe55f6e9fe8ebefa239d56d9b2.png)
(2)如图,一对“镜子”函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c201ec9d9d6b1d37a53060d0d349ca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】如图,用一段长的篱笆围成一个一边
靠墙(无需篱笆)的矩形
菜园,并且中间也用篱笆
隔开,
,墙长
.
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07281d505dda3e0b77be719396361443.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c901bcdfa58f0c68ad0161b0bab269.png)
(2)求矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(3)在(2)的情况下,若将矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e41c2d7ae6aaf6d91129ed5221a415a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3ff0b0fea1cb642d3f6be77a1ff32f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c901bcdfa58f0c68ad0161b0bab269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/583ed731a560c3aa02a479f6eeedd4c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6eaa137a2290a9a9ec7ad635d17dbb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c901bcdfa58f0c68ad0161b0bab269.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
您最近一年使用:0次