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如何求一次函数的解析式,这是初中数学教学中常见的问题.本文介绍几种不同的方法,供同行们教学参考.一、利用定义求一次函数解析式例1已知函数y=(m-3)x~(|m|-2)+3是一次函数,求m的值和该函数解析式.分析由一次函数的定义,即一般形式y=kx+b(k,b都是常数,k≠0)得,自变量的最高次为1,同时比例系数k必须是不为0的
How to find a function of the analytic formula, which is a common problem in junior high school mathematics teaching.This article describes several different methods for peer teaching reference.First, the use of definitions to find a function analysis Example 1 Known function y = (m -3) x ~ (| m | -2) +3 is a linear function, and find the value of m and the analytic formula of the function Analysis by the definition of a linear function, that is, the general form y = kx + b (k, b are constant , k ≠ 0), the highest order of the independent variables is 1, while the scale factor k must be not 0