11-一次函数的实际应用
一、单选题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/795d5254e8ff0ca3872d4ff964973628.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/3948bd0a-bcac-40f1-8eae-c888e61115b4.jpg?resizew=142)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/1f1abd87-74e3-4eeb-bae9-2ea7ae41e1f7.png?resizew=172)
A.![]() | B.![]() | C.![]() | D.![]() |
【知识点】 求一次函数解析式解读 其他问题(一次函数的实际应用)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/6/67c5979c-6eb4-41f8-abdf-9c36bf0ae15e.png?resizew=409)
A.4 | B.4![]() | C.8![]() | D.![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/492b6d3883713fcaa8a4fdd87b87b480.png)
A.5分钟 | B.9分钟 | C.![]() | D.![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7fbd6b9f85c086ac95562fe45e8d969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ce13774b09ff2edddaf21a072cf60a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7fbd6b9f85c086ac95562fe45e8d969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7fbd6b9f85c086ac95562fe45e8d969.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ce13774b09ff2edddaf21a072cf60a.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() ![]() |
【知识点】 动点问题的函数图象解读 几何问题(一次函数的实际应用)解读
![](https://img.xkw.com/dksih/QBM/2020/6/15/2485394242265088/2490913356988416/STEM/9c323754c95c47c7967bff441eabb040.png?resizew=202)
A.交易时间在3.5h时累计卖出的数量为12万手 |
B.交易时间在1.4h时累计卖出和累计买入的数量相等 |
C.累计卖出的数量和累计买入的数量相差1万手的时刻有5个 |
D.从点A对应的时刻到点C对应的时刻,平均每小时累计卖出的数量小于买入的数量 |
【知识点】 从函数的图象获取信息解读 其他问题(一次函数的实际应用)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efc18a5bb2e53586331b2a58538a48b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efc18a5bb2e53586331b2a58538a48b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfecbaf8de1df66c12e21368160d24f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764ce13eba807c14daf3498cec3bef8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be9b4a83b9aebebf29de0c4406ebf894.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbe5cb81b72e94f92d2aaecd553daac2.png)
温馨提示:①导体两端的电压U,导体的电阻R,通过导体的电流I,满足关系式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c83f61a0d94fac4f83902a3ca0fc862.png)
②串联电路中电流处处相等,各电阻两端的电压之和等于总电压.
A.![]() ![]() |
B.电压表显示的读数为3伏时,可变电阻![]() |
C.电压表显示的读数为2伏时,对应测重人的质量为75千克 |
D.该电子体重秤标注的最大质量为120千克,小明说选用的电压表量程为0~6伏 |
【知识点】 求一次函数解析式解读 其他问题(一次函数的实际应用)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/28/75bd46be-bea2-4c70-b5c1-4a93ab0af9d9.png?resizew=410)
A.第一班车离入口处的距离y(米)与时间x(分)的解析式为y=200x﹣4000(20≤x≤38) |
B.第一班车从入口处到达花鸟馆所需的时间为10分钟 |
C.小聪在花鸟馆游玩40分钟后,想坐班车到大象馆,则小聪最早能够坐上第四班车 |
D.小聪在花鸟馆游玩40分钟后,如果坐第五班车到大象馆,那么比他在花鸟馆游玩结束后立即步行到大象馆提前了7分钟(假设小聪步行速度不变) |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/207e3f7b704855a375fde6e3e223b3be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0623207595425920f16e76a7f8f268b6.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/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a769eb5a4ae8beb93fadd3cf40b6c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f883183388943087ed3e46e3868ff43d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f883183388943087ed3e46e3868ff43d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712453190115328/2713904849756160/STEM/1e081639-20fa-4cdc-add7-2eae3813c344.png?resizew=268)
A.![]() | B.![]() | C.![]() | D.![]() |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f558992e649b93ee36f37513781311a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112af7329d03e905eb0c20ee87ee684.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4f1f5b865e4e0ef1d02baa190784c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/158008b08b825afa336723de7cdf4b0c.png)
![](https://img.xkw.com/dksih/QBM/2021/7/9/2760517787975680/2771795900628992/STEM/774cdd4c-5ecd-4ba2-b873-80eccbafa80b.png)
A.1 | B.2 | C.3 | D.4 |
【知识点】 行程问题(一次函数的实际应用)解读
二、填空题
![](https://img.xkw.com/dksih/QBM/2022/4/14/2957991718060032/2958582295863296/STEM/ffd92802-3935-42a8-9042-5e3228378201.png?resizew=336)
【知识点】 分式方程的实际应用解读 其他问题(一次函数的实际应用)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c8c39de4d7d1277da346b51b5bd2499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a3cc8c48bf54ec8252e5dce6867754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/6/d03515f1-a75e-4ec2-9ecb-ba629d521bdd.png?resizew=179)
【知识点】 坐标与图形 其他问题(一次函数的实际应用)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/18/e49928cf-dc2d-4ac3-8436-c60b30f5c33c.png?resizew=200)
如图,在平面直角坐标
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e199e11883feb28977e5afcca92bb9e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
【知识点】 一次函数图象平移问题解读 其他问题(一次函数的实际应用)
![](https://img.xkw.com/dksih/QBM/2022/5/5/2979769915506688/2980802713755648/STEM/47b98b7001b942138739acdb0165a56e.png?resizew=208)
x(厘米) | 1 | 3 | 4 | 6 | 11 | 12 |
y(斤) | 0.75 | 1.25 | 1.50 | 2.25 | 3.25 | 3.50 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92ca51c7b84b6d46cad7f0e594aae7a1.png)
![](https://img.xkw.com/dksih/QBM/2021/11/16/2852442875207680/2854171861868544/STEM/6c46ac2b-766d-4e07-9653-347b5429788a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc00a21243686fd5eb2b5d2771019b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9b5e076078240e0c5ad9763a9824d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3d196cfee8345bd28a2f3814b676f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9b5e076078240e0c5ad9763a9824d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b4acb0673d5a59e659b404375d58db5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63caa7e958f171d9dbc9424fc4ea4339.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16fe1692cc41e0413d6a5408841f2161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.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/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1c9ae241fd78126274c65e17990c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c650fe55b7603f106c53ca2423451c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa024f64c8883204aa8cd971fd8736a.png)
【知识点】 绝对值的意义解读 坐标与图形 几何问题(一次函数的实际应用)解读
三、解答题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70c957d305e0139fb9bd254b6f8a7fdc.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
②若购买的B型餐桌套数不多于C型餐桌套数,求总费用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(2)已知酒店实际购买三种餐桌的总费用为18万元,记购买的三种餐桌椅子的总数最多的方案为最佳购买方案,求最佳购买方案的椅子总数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f328ba89c0a92a4447788b65571f7aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc413f31f3b4d711ef4742da9c87007b.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/e4c1f9c14db1a10006f079739ffa690d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc413f31f3b4d711ef4742da9c87007b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41fb80b591b497d8d7a6d8592160de44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00e031b7416f7095364ec0c0f45a9c44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5426a7280a232bfeb887b84c6213224d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dccbec365decd5a7af4a0db81614f8b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0ad0d66c478f9ae8103d6dac1a39ee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28b40a45f389bf6874bf215be0ed371.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.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/28abcb2819d45fff7aba0e29ed901335.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/5c02bc0c74292b1e8f395f90935d3174.png)
(2)滑块从点
![](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/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(3)在整个往返过程中,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f2878a907cafa1dd9b0235b6d6efb48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
【知识点】 其他问题(一次函数的实际应用)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c29bf5a05dd46f6e03dfd22c32f7ce1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c398a7d5ff7ddde6fce805e559e3e80d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://img.xkw.com/dksih/QBM/2023/12/11/3386954963058688/3387129617391616/STEM/dc6b2b9ebc13433b974bef8906a22a12.png?resizew=355)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)小黄认为:“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d263124915e6bac6d78df07706d8f804.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(3)是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5ecc482b5968d904f0e04d0834e372.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42b91627ea51c5dd4592af6568307742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89789143aab8238a733c7c06591ae735.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af80a88860bcd4a2682ed6105afac188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f98020c762bb0bd7f24f82f927be8227.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b11be6dd6af544407a1d7da7225a7a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求货车装完货物后驶往甲地的过程中,距其出发地的距离
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f98020c762bb0bd7f24f82f927be8227.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b11be6dd6af544407a1d7da7225a7a4.png)
(3)直接写出在出租车返回的行驶过程中,货车出发多长时间与出租车相距
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/096d69156c53eebc5c52892bdfb9bc1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0839653583b3370839df5b4fa542f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c239e584d49c5c30e0df1aeda28cb871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
(1)已知点Q的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ed24bfcc37b79fe9ca61ed8fdf26ea.png)
①如下图所示,若点P为原点,直接写出P关于Q的等垂点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/faff2f97-ef09-42fa-aabf-ab0aa615c74f.png?resizew=153)
②如下图所示,P为y轴上一点,且点P关于点Q的等垂点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/650353eda77d014bb42d185bd967e549.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/f4ce4234-dd03-40c4-9d88-1f0ccd23a233.png?resizew=162)
(2)如下图所示,若点Q的坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48befa5d90fafd8bfdb6c90fd241ebfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/107babba45f110012183dc4dc54490f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fe29caf61254f41c49125e31bf37614.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de4a5395c94c4a317214a4c5720dfac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60bc1289cdbb88b592a2bdc2ec2fb222.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/4896a67a-3235-4f4f-8788-0ae1e75cb5c5.png?resizew=222)
(2)若该经销商购进甲、乙两种产品共6000kg,并能全部售出.其中乙种产品的进货量不低于1600kg,且不高于4000kg,设销售完甲、乙两种产品所获总利润为w元(利润=销售额一成本),请求出w(单位:元)与乙种产品进货量x(单位:kg)之间的函数关系式,并为该经销商设计出获得最大利润的进货方案;
(3)为回馈广大客户,该经销商决定对两种产品进行让利销售.在(2)中获得最大利润的进货方案下,甲、乙两种产品售价分别降低a元/kg和2a元/kg,全部售出后所获总利润不低于15000元,求a的最大值.
【知识点】 最大利润问题(一次函数的实际应用)解读
如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0d7095ddd69d6ceaf1065b1bc2c79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d900531973c546625694146fa1509ab9.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/68fbbd17c89f03dbb61cd6ffdb9a0344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2afe3cea4abdb1b72464d8a1f92db114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3834d7ec7531f3c3c0ce9b286f7a49.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/23/bebe814c-1a48-47d6-b79d-eb1c5f90f14d.png?resizew=514)
【模型应用】
在平面直角坐标系中,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4de869ae6b6dc5b79fcae3de540b30bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)如图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4de869ae6b6dc5b79fcae3de540b30bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
小明想利用“一线三等角”模型解决这个问题.如图,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)若将直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4de869ae6b6dc5b79fcae3de540b30bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9763846b1131e1e3e2d741ad95d5bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a45f435b604c73af7053422243b66cd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)