已知一次函数
.
(1)完成列表,并作出该函数的图象;
(2)设图象与x、y轴分别交于点A、B,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1a8ca763c18d0e91a256188a788f9c0.png)
(1)完成列表,并作出该函数的图象;
(2)设图象与x、y轴分别交于点A、B,求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/6/feaf3f34-242a-4516-870c-1a32d0b4bf20.png?resizew=183)
更新时间:2016-12-06 04:16:16
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相似题推荐
解答题-应用题
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适中
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【推荐1】医学院某药物研究所研发了甲,乙两种新药,据监测,如果成人按规定的剂量服用,服药后的时间x(小时),服用甲种药物后每毫升血液中的含药量
(微克),服用乙种药物后每毫升血液中的含药量
(微克),记录部分实验数据如下:
对以上数据进行分析,补充完成以下内容.
(1)可以用函数刻画
与x,
与x之间的关系,在同一平面直角坐标系xOy中,已经画出
与x的函数图象,请画出
与x的函数图象;
(3)据测定,每毫升血液中含药量不少于2微克时对治疗疾病有效,则两种药物中______种药的药效持续时间较长,药效大约相差______小时(结果保留小数点后一位).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
x | 0 | 0.20 | 0.40 | 1.00 | 1.53 | 2.26 | 2.52 | 3.38 | 4.53 | 5.44 | … |
![]() | 0 | 0.68 | 1.36 | 3.40 | 3.21 | 2.77 | 2.65 | 2.31 | 1.92 | 1.65 | … |
![]() | 0 | 0.18 | 0.36 | 9.00 | 5.03 | 2.26 | 1.70 | 0.66 | 0.19 | 0.07 | … |
(1)可以用函数刻画
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
(3)据测定,每毫升血液中含药量不少于2微克时对治疗疾病有效,则两种药物中______种药的药效持续时间较长,药效大约相差______小时(结果保留小数点后一位).
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解答题-作图题
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【推荐2】阅读下列内容,并解答问题.
一个滑雪者从山坡滑下,为了得出滑行距离
(单位:
)与滑行时间
(单位:
)之间的关系式,测得一些数据(如表):
为观察
与
之间的关系,建立坐标系(如图),以
为横坐标,
为纵坐标.请解答以下问题:
(1)描出表中数据对应的5个点,并用平滑曲线连接它们;
(2)根据(1)所画出的曲线图象,利用我们所学的函数,近似地表示
关于
的函数关系式.
一个滑雪者从山坡滑下,为了得出滑行距离
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
滑行时间 | 0 | 1 | 2 | 4 | 5 |
滑行距离 | 0 | 4.5 | 14 | 28.5 | 48 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
(1)描出表中数据对应的5个点,并用平滑曲线连接它们;
(2)根据(1)所画出的曲线图象,利用我们所学的函数,近似地表示
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/2019/10/25/2319594792943616/2320082027528192/STEM/4dc1757bc7264fe49a9a03104fbbb823.png?resizew=185)
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解答题-证明题
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名校
【推荐1】如图1,直线
:
与
轴交于点
、直线
上有一动点
,过点
作
轴的平行线
,过点
作
轴的平行线
,它们相交于点
.将
沿直线
翻折得到
,点
的对应点为
.
(1)直线
与
轴的交点
的坐标为______.直线
与
轴的交点
的坐标为______.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/24/2b43dbda-ff70-4f36-ba44-5a6a0235f5c0.png?resizew=133)
(2)如图2,当点
的对应点
落在
轴上时,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/24/9084b54a-7646-4443-a699-5c6c05f1da7f.png?resizew=138)
①求证:
;
②求点P的坐标.
(3)如图3,直线
上有
、
两点,当点P从点A运动到点B的过程中,点
也随之运动,请直接写出点
的运动路径长为______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ea05a2396e436b4df62d6328dbeaddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](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/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f3956f008cc29ca4bae44a087d5427.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca306f77399ead5de92bd922dade326b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f59c91f3500eca6aeb71c85bfe31a908.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b1a5427d8ff23df0f3ec194756c84c.png)
(1)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/24/2b43dbda-ff70-4f36-ba44-5a6a0235f5c0.png?resizew=133)
(2)如图2,当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b1a5427d8ff23df0f3ec194756c84c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/24/9084b54a-7646-4443-a699-5c6c05f1da7f.png?resizew=138)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3e660a1b7fa29c1d41c2aa3f2a5b952.png)
②求点P的坐标.
(3)如图3,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de50fa1cc298fb423abd90e3a8e815b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/567fc6dde8cea2eccafe83048ed9b650.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b1a5427d8ff23df0f3ec194756c84c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b1a5427d8ff23df0f3ec194756c84c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/24/e64c9265-b70a-4812-838a-f8c08251a1f9.png?resizew=140)
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解答题-问答题
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【推荐2】如图,在平面直角坐标系中,直线
与x轴交于点
,与y轴交于点A,直线
过点A,与x轴交于点C,点P是x轴上方一个动点.
的函数表达式;
(2)若点P在射线
上,且
,求点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e8e072bf31deb363dafc0a87af9f513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a98e24892abc0eb34d5216d4e89c61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若点P在射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/788f4c253f44c08a390202ee0a9d2950.png)
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解答题-证明题
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适中
(0.65)
【推荐1】如图,在四边形
中,
,点
为
上一点,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/3e5736f2-4535-4e25-86d2-fc4c5202a664.png?resizew=159)
(1)求证:
;
(2)若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeaa6aa41dd7aa4cfe20a092a172d255.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eaffcd2070bfcb1955e2cab66c26c06.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/3e5736f2-4535-4e25-86d2-fc4c5202a664.png?resizew=159)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3f5dc11efe60b4fd9a13b1d6b83842.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ecbca31ec0f6635090f4f82d2793fef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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解答题-证明题
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适中
(0.65)
名校
【推荐2】如图,在
中,
,以
为直径的
与
相交于点D,
,垂足为E.
![](https://img.xkw.com/dksih/QBM/2023/2/3/3167058682912768/3188704537083904/STEM/24b66aae04c347ed8f1c2e9edd7d1153.png?resizew=111)
(1)求证:
是
的切线;
(2)若弦
垂直于
,垂足为G,
,
,求
的半径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fbbd17c89f03dbb61cd6ffdb9a0344.png)
![](https://img.xkw.com/dksih/QBM/2023/2/3/3167058682912768/3188704537083904/STEM/24b66aae04c347ed8f1c2e9edd7d1153.png?resizew=111)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若弦
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f808d6b6187bed0d20814bb6b1929aa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ba2bc6cf8425d24526f14802df8cf5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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