若x,m都为非负数,x﹣y﹣m=﹣1,2x+m=3.求y与x的函数关系式,并画出此函数的图象.
更新时间:2018-04-09 14:52:39
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【推荐1】如图,在平面直角坐标系
中,直线
交x轴负半轴于点A,交y轴于点B,以
为边作矩形
,点C落在x轴正半轴上.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/01ef8c75-e5da-4cf5-9cf4-df611be31325.png?resizew=393)
(1)求矩形
的面积;
(2)点E在直线
上,连接
,点F在直线
上,
.
①当F点为
中点时,求E点坐标;
②当
时,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373e940578737a54a51be72e53a31c36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/01ef8c75-e5da-4cf5-9cf4-df611be31325.png?resizew=393)
(1)求矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)点E在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/706725f00d4399ac392ac0ee231a4dae.png)
①当F点为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d96a5d40d0aea9f4398ca4d0fe9b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
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【推荐2】已知:在平面直角坐标系中,点O为坐标原点,直线y=﹣x+3交x轴于点B,交y轴于点A,过点A作AC⊥AB交x轴于点C.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/33bb9d9f-2905-494c-931c-1e7fe4e2f9f4.png?resizew=550)
(1)如图1,求直线AC的解析式;
(2)如图2,点P在AO的延长线上,点Q在AC上,连接PB,PQ,且PQ=PB,设点P的纵坐标为t,AQ的长为d,求d与t之间的函数关系式(不要求写出自变量t的取值范围);
(3)如图3,在(2)的条件下,PQ交x轴于点D,延长PQ交BA的延长线于点E,过点E作EF⊥PE交y轴于点F,若DE=
EF,求点Q的坐标.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/33bb9d9f-2905-494c-931c-1e7fe4e2f9f4.png?resizew=550)
(1)如图1,求直线AC的解析式;
(2)如图2,点P在AO的延长线上,点Q在AC上,连接PB,PQ,且PQ=PB,设点P的纵坐标为t,AQ的长为d,求d与t之间的函数关系式(不要求写出自变量t的取值范围);
(3)如图3,在(2)的条件下,PQ交x轴于点D,延长PQ交BA的延长线于点E,过点E作EF⊥PE交y轴于点F,若DE=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.png)
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【推荐1】已知点
,
,
.
![](https://img.xkw.com/dksih/QBM/2020/11/13/2592139465752576/2607566737014784/STEM/dfef85e1-3106-4bf7-b89c-7f340cf46439.png)
(1)在平面直角坐标系
中画出
,
,
三点并求直线
的解析式;
(2)求
的面积;
(3)已知一次函数
(
为常数).
①求证:一次函数
的图象一定经过点
;
②若一次函数
的图象与线段
有交点,直接写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75b3394ca052c46f7795f3dadc19196f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87859748d7c7d665df7d430856bae01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f0ec7f84f716a316ec92d133927666c.png)
![](https://img.xkw.com/dksih/QBM/2020/11/13/2592139465752576/2607566737014784/STEM/dfef85e1-3106-4bf7-b89c-7f340cf46439.png)
(1)在平面直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)已知一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76988cb8cb40ffc6c1a3a907913327ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
①求证:一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76988cb8cb40ffc6c1a3a907913327ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
②若一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76988cb8cb40ffc6c1a3a907913327ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐2】在平面直角坐标系
中,对于点
和
.给出如下定义:如果
,那么称点Q为点P的“沉毅点”.例如点
的“沉毅点”为点
,点
的“沉毅点”为点
.
上点M的“沉毅点”是
,求点M的坐标;
(2)若双曲线
上点P的“沉毅点”为点Q,且
=4,求k的值;
(3)若点P在函数
上,其“沉毅点”Q的纵坐标
的取值范围是
,结合图象写出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/174861299cb1b64e5304c25c70eb216f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b1d93f04420d6f51bd2523b1379accb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f38630996de0d946ad4f4a199735a44a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c79966139ee5e8281a07d4b811e9262e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c79966139ee5e8281a07d4b811e9262e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf22d2b8ffcc653d5074f6513b2d6a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44fcff30f30848c155e9c826aa8183bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c608def11fa0e2b34f05592ef1d11fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bada865a4ed6d4241925601afd63921.png)
(2)若双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75cb90e72041e9139d4964f529ae1728.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9e726b83f27a18399ec5c68a1fed838.png)
(3)若点P在函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55e19563e512a9f830dbaeeb1f27b0df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4d2174f411d9db6ab7b2aea47818cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c4c2fb0cfb3223f76caf05d5b1bf050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐1】在平面直角坐标系xOy中,A(0,2),B(4,2),C(4,0).P为矩形ABCO内(不包括边界)一点,过点P分别作x轴和y轴的平行线,这两条平行线分矩形ABCO为四个小矩形,若这四个小矩形中有一个矩形的周长等于OA,则称P为矩形ABCO的矩宽点.例如:如图中的P(
,
)为矩形ABCO的一个矩宽点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/15/337c9d11-f9c1-4cdc-9ced-aee43ddcb3ed.png?resizew=285)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/15/188484bb-2c84-47c7-aa82-17bee6875fae.png?resizew=241)
(1)在点D(
,
),E(2,1)F(
,
),中,矩形ABCO的矩宽点是 .
(2)若G(m,
)为矩形ABCO的矩宽点,求m的值;
(3)若一次函数y=k(x﹣2)﹣1(k≠0)的图象上存在矩形ABCO的矩宽点,直接写出k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33adb74906403b0b00fcbd9fa691d8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/15/337c9d11-f9c1-4cdc-9ced-aee43ddcb3ed.png?resizew=285)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/15/188484bb-2c84-47c7-aa82-17bee6875fae.png?resizew=241)
(1)在点D(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e93941f67a248bdbedb285b4e40500.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d297eab7380f6a28ec010218d9ab4ba1.png)
(2)若G(m,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
(3)若一次函数y=k(x﹣2)﹣1(k≠0)的图象上存在矩形ABCO的矩宽点,直接写出k的取值范围.
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【推荐2】请直接在平面直角坐标系中画出函数y=2x-2的图象,并根据图象回答下列问题:
(1)函数图象不经过第象限.
![](https://img.xkw.com/dksih/QBM/2019/8/1/2259418439876608/2266379156234241/STEM/952b87c7f0fb447d81623b69368f6437.png?resizew=147)
(2)将y=2x-2的图象向下平移后经过点M(1,-3),求平移后的函数解析式.
(1)函数图象不经过第象限.
![](https://img.xkw.com/dksih/QBM/2019/8/1/2259418439876608/2266379156234241/STEM/952b87c7f0fb447d81623b69368f6437.png?resizew=147)
(2)将y=2x-2的图象向下平移后经过点M(1,-3),求平移后的函数解析式.
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