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函数图象的平移问题是初中函数学习中的一个要点,但学生解题时往往容易搞错.究其原因,主要是对函数没有深刻的理解,从而没有找到解决问题的思路.下面给大家提供一种“以点带线”的平移方法,供参考.一、一次函数图象的平移1.取两点求一次函数图象的平移因为一次函数的图象是条直线,而直线是由无数多个点组成的,所以线的平移,其实就是点的平移.两点确定一条直线,因此在原直线上任取两个点,将这两个点分别按要求
Function image translation problem is a point in junior high school function learning, but students often easy to make mistakes when solving problems. The reason is mainly because there is no profound understanding of the function, so there is no way to solve the problem. A translation method of “point with a line” for reference First, the translation of the image of a linear function 1. Take two points to find a translation of the function image Because the image of a linear function is a straight line, and the line is By countless more points, so the line of translation, in fact, is the point of translation. Two points to determine a straight line, so in the original straight line to take two points, the two points were as required