函数是初中数学的核心内容,同学们学习函数知识重点应理解函数的意义,掌握函数的性质,运用函数的观点解决简单的实际问题,我们常见许多试题中与函数相关的问题以填空题的形式出现,这些试题考查的内容多是函数的定义、函数的性质.例1(1)一次函数y=3x+b的图象过坐标原点,则b的值为____.(2)反比例函数y=(m+1)/x的图象经过点(2,1),则m的值是 Functions are the core content of junior high school mathematics. The students should learn the function knowledge should focus on understanding the meaning of the function, grasp the nature of the function, use the function of the point of view to solve simple practical problems, we often find many questions in the function-related questions to fill in the blank form of the problem Appears, the content of these examinations is mostly the definition of the function, the nature of the function. Example 1 (1) The function y = 3x + b image over the coordinates of the origin, then the value of b is ____. (2) Inverse function y The image of (m+1)/x goes through point (2,1), then the value of m is