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一次函数是历年中考的常客,不仅如此,有关一次函数的创新应用也层出不穷,此类试题设计新颖,别具一格,既可以训练同学们的思维能力,又可以十分有效地考查同学们对相关知识的理解与运用,为方便同学们的学习,及时把握中考的动态,现归纳几例.一、情景对话例1某地为改善生态环境,积极开展植树造林,甲、乙两人从近几年的统计数据中有如下发现:甲:该地公益林的面积y1(万亩)与年份x(x≥2010)满足关系式:y1=5x-1250.
Not only this, but also an endless stream of innovations and applications of the one-time function. These questions are novel in design and unique in style. They can not only train students ’thinking ability but also be able to examine students’ understanding of relevant knowledge very effectively And use, in order to facilitate the students to learn, to grasp the dynamics of the examination in a timely manner, are summarized in a few cases .A situational dialogue example 1 to improve the ecological environment, and actively carry out afforestation, A, B two statistics from recent years The data found as follows: A: The area of public welfare forest y1 (mu) and the year x (x≥2010) to satisfy the relationship: y1 = 5x-1250.