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求反比例函数的解析式是初中数学中的一个常见题型,中考中经常出现。要求反比例函数的解析式,关键在于确定系数。本文以近年来中考试题为例,说明确定系数的几种方法。一、列出关于系数的方程例1(江苏盐城市中考题)若反比例函数的图像经过点(1,3),求该反比例函数的解析式。
The analytical formula of the inverse proportional function is a common question type in junior high school mathematics, which often appears in the examination. The key to determining the analytical formula of the inverse proportional function is to determine the coefficient. This article takes the middle school exams in recent years as an example to illustrate several ways to determine the coefficient. First, list equations related to the coefficient Example 1 (Jiangsu Yancheng exam questions) If the image of the inverse proportional function passes through the points (1, 3), find the analytical formula of the inverse proportional function.