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图象条件的行程问题在近年来中考中屡见不鲜.这类问题的最大特点是以物件的运动为背景,将距离(或路程)和时间之间的函数关系在平面直角坐标系中描述出来.解答它们,应认真读题,观察函数图象,并把其中一些特殊点的横坐标和纵坐标都找出来.如果对应的图象是折线,应看看折线能分解为哪些线段或射线,并理解它们所表示的实际意义.现以近年来中考题为例介绍如下:例1小颖和小亮上山游玩,小颖乘坐缆车,小亮步行,两人相约在山顶的缆车终点会合.已知小亮行走到缆车终点的路程是缆车到山顶的线路长的2倍,小颖
The problem of the stroke of the image condition is not uncommon in the middle school entrance examination in recent years. The most important feature of this type of problem is the movement of the object as the background, and the functional relationship between distance (or distance) and time is described in the planar rectangular coordinate system. They should read the question carefully, observe the function image, and find out the abscissa and ordinate of some special points. If the corresponding image is a polyline, you should see which segments or rays the polyline breaks into, and understand The actual meaning they represent is now described by taking the exam in recent years as an example: Example 1 Xiao Ying and Xiao Liang went uphill to play, Xiao Ying took the cable car, Xiao Liang walked, and the two met at the top of the cable car at the top of the mountain. Known small The journey to the end of the cable car is 2 times longer than the length of the cable car to the top of the cable car. Xiao Ying