数学源于生活又服务于生活,它具有丰富的内涵,具体表现在灵活运用之中.作为一门基础性学科,它有着特殊的应用价值,能活学还不够,还应在活学的基础上活用,使数学知识真正为我们的学习、生活服务.社会生活中有许多实际应用问题需要建立一次函数模型,进而再利用一次函数的知识来解决.下面我们举例来说明一次函数与生活的密切关系. As a fundamental discipline, mathematics has its own special application value, it can not live well enough, and it should be on the basis of living school On the use of mathematics so that our real life, learning and living.Social life, there are many practical problems need to establish a function model, and then re-use the knowledge of a function to solve the following we give an example to illustrate a close function and life relationship.