![](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/e3a951496357f556654818f843e0c433.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2351df22087d65be69519770be21c20f.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
(2)求甲从
![](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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)甲回到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ce48eafd36547782174eb304d4a003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
更新时间:2024-01-10 23:32:30
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【推荐1】我边防局接到情报,如图1,近海处有一可疑船只
正向公海方向行驶,边防局迅速派出快艇
追赶.图2中,
,
分别表示两船相对于海岸的距离
与追赶时间
之间的关系.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/10/2e2d1bc7-c186-425f-8727-c305c8ca3676.png?resizew=351)
(1)预计快艇
在距离海岸多少
能追赶上可疑船只
?
(2)为了对可疑船只
实施有效检查,边防局同时派出快艇
协助快艇
追赶,快艇
与快艇
的出发地相同,且快艇
可比快艇B提前
追赶上
,则快艇
的速度为多少
?
![](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/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c25c6af9cf9338437a026ee18776a076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c887c84a415327677175f01b0aff037f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/10/2e2d1bc7-c186-425f-8727-c305c8ca3676.png?resizew=351)
(1)预计快艇
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f053d014fa230134516b59cb6345f840.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)为了对可疑船只
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bade219d8b24d02419e7c8164384bf8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea0e56ef8966de813cd82d7cbfa4f66.png)
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【推荐2】有一天,龟、兔进行了600米赛跑,如图表示龟兔赛跑的路程s(米)与时间t(分钟)的关系(兔子睡觉前后速度保持不变),根据图象回答以下问题:
![](https://img.xkw.com/dksih/QBM/2018/4/15/1924648419295232/1925794154274816/STEM/e572a5a6f6ba40fc8783137b01abfda1.png?resizew=191)
(1)赛跑中,兔子共睡了多少时间?
(2)赛跑开始后,乌龟在第几分钟时从睡觉的兔子旁经过?
(3)兔子跑到终点时,乌龟已经到了多长时间?并求兔子赛跑的平均速度.
![](https://img.xkw.com/dksih/QBM/2018/4/15/1924648419295232/1925794154274816/STEM/e572a5a6f6ba40fc8783137b01abfda1.png?resizew=191)
(1)赛跑中,兔子共睡了多少时间?
(2)赛跑开始后,乌龟在第几分钟时从睡觉的兔子旁经过?
(3)兔子跑到终点时,乌龟已经到了多长时间?并求兔子赛跑的平均速度.
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【推荐3】元朝朱世杰的《算学启蒙》一书记载了一个数学问题:“良马日行二百四十里,驽马日行一百五十里,驽马先行一十二日,问良马几何追及之.”它的大意是∶“良马每天行
里,劣马每天行
里,劣马先行
天,良马需要多少天才能追上劣马?”如图,是良马与驽马行走路程
(单位∶里)关于行走时间
(单位∶日)的函数图象.
记为
,射线
记为
,那么良马行走路程
关于行走时间
的函数图象是____________;(填
或
)
(2)两图象交点
的坐标是____________;
(3)求良马行走路程
关于行走时间
的函数解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd4ac8ada79c078a294dcc025852fe29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c5b21c1f4bc7c5947c0df11992adc20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45e61680ffc6f940bd5b8afda3ae9c59.png)
![](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/ae7a3e520a16d4fdd73c4e6a4ce7be0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ff8c8d239cc12ddc3a899e9f054aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](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/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
(2)两图象交点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(3)求良马行走路程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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【推荐1】水果店购进某种水果的成本为
元
千克,经市场调研,获得销售单价
(元/千克)与销售时间
为整数)(天)之间的变化规律符合一次函数关系,部分数据如下表:
(1)试求
关于
的函数解析式;
(2)若该水果的日销量
(千克)与销售时间
(天)的关系满足一次函数
为整数).求销售过程中最大日销售利润为多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4333bb203d02814c146ed587b69ea69d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0999d78ef121791b70399c1db2062e75.png)
销售时间 | 1 | 4 | 5 | 8 | 12 |
销售单价 | 20.25 | 21 | 21.25 | 22 | 23 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)若该水果的日销量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa6d0aa2228cb1743b26a2ea5ebcdf03.png)
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【推荐2】已知y与
成正比例,并且x=1时y=2.
(1)求y与x之间的函数关系式.
(2)当x=-1时y的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
(1)求y与x之间的函数关系式.
(2)当x=-1时y的值.
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【推荐1】小明从家去体育场锻炼,同时,妈妈从体育场以
米/分的速度回家,小明到体育场后发现要下雨,立即返回,追上妈妈后,小明以
米/分的速度回家取伞,立即又以
米/分的速度折回接妈妈,并一同回家.如图是两人离家的距离
(米)与小明出发的时间
(分)之间的函数图像.
(注:小明和妈妈始终在同一条笔直的公路上行走,图像上
、
、
三点在一条直线上)
(
)求线段
的函数表达式.(写出自变量的取值范围)
(
)求点
坐标,并说明点
的实际意义.
(
)当
的值为__________时,小明与妈妈相距
米.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e6f1af4b44b2e97e8f319bab4ae9010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f38eed00a39aae5a7232b72a4d3ed821.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f38eed00a39aae5a7232b72a4d3ed821.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(注:小明和妈妈始终在同一条笔直的公路上行走,图像上
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d69c0fc5595aadf8e59662c20c515b58.png)
![](https://img.xkw.com/dksih/QBM/2017/12/22/1843813091549184/1844700427108352/STEM/8e133cee37ce4394972d90a74de7e3fa.png?resizew=241)
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【推荐2】小李、小王分别从甲地出发,骑自行车沿同一条路到乙地参加公益活动.如图,折线
和线段
分别表示小李、小王离甲地的距离y(单位:千米)与时间x(单位:小时)之间的函数关系.根据图中提供的信息,解答下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/d0eedece-5e53-46c7-977c-0754fa5a10db.png?resizew=193)
(1)求小王的骑车速度,点C的横坐标及代表的实际意义;
(2)求线段
对应的函数表达式;
(3)当小王到达乙地时,小李距乙地还有多远?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/d0eedece-5e53-46c7-977c-0754fa5a10db.png?resizew=193)
(1)求小王的骑车速度,点C的横坐标及代表的实际意义;
(2)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)当小王到达乙地时,小李距乙地还有多远?
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