一次函数是八年级的一个学习重点,它也是后面进一步学习的基础.现将常见的题型及其解法总结于下,供同学们参考.一一次函数概念型若y=kx+b(k,b为常数,k≠0),则称y是x的一次函数.特别地,当b=0时,y叫作x的正 A function is a learning focus of the eighth grade, it is also the basis for further learning later. Now the common questions and their solutions are summarized below, for students to refer to. Once the function concept if y = kx + b (k , b is a constant, k ≠ 0), then y is a linear function of x. In particular, when b = 0, y is called positive x