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原题呈现一列快车从甲地驶往乙地,一列慢车从乙地驶往甲地,两车同时出发,设慢车行驶的时间为x(h),两车之间的距离为y(km),图中的折线表示x与y之间的函数关系.根据图象进行以下探究:信息读取(1)甲、乙两地之间的距离为km;(2)请解释图中点B的实际意义;图象理解(3)求慢车和快车的速度;(4)求线段BC所表示的y与x之间的函数关
The original title presents an express train heading from station A to station B. A local train goes from station A to station B. The two vehicles start at the same time and the time for the local vehicle is x (h). The distance between the two vehicles is y (km) , The broken line in the figure shows the functional relationship between x and y.According to the image, the following inquiry is carried out: (1) The distance between A and B is km; (2) Please explain the point B The actual meaning; image understanding (3) to speed the local car and express; (4) find the line segment BC expressed by the function between y and x