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数学来源于生活,而数学知识又是为解决生活中的实际问题而服务;尤其是一次函数更为数学知识在生活中的应用提供了广阔的途径,也更体现了数学是有用的,数学就在我们身边:笔者结合教学实践,以中考试题作为载体,对一次函数应用题加以分类浅析,供读者欣赏,一、叙事型:某地为了鼓励居民节约用水,决定实行两级收费制,即每月用水量不超过14吨(含14吨)时,每吨按政府补贴优惠价收费;每月超过14吨时,超过部分每吨按
Mathematics comes from life, and mathematical knowledge is to solve the practical problems in life and service; especially a function more mathematical knowledge in life provides a broad way to use, but also reflects the usefulness of mathematics, mathematics In our side: The author combines teaching practice, in the middle school exam questions as a carrier, a functional analysis of the application questions to be classified for readers to enjoy, a narrative type: a place to encourage residents to save water, decided to implement a two-tier charging system, that is Monthly water consumption does not exceed 14 tons (including 14 tons), per tonne by the government subsidies preferential prices; more than 14 tons per month, more than part per ton