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qiao yong han shu zhi shi miao jie shi ji wen ti
Author(s): 
Pages: 15-16
Year: Issue:  11
Journal: School Journal of Mathematics

Keyword:  函数图象应用能力应用意识中考数学试题实际问题巧用解析式图象结图象表示会员卡;
Abstract: <正>近几年,各地中考数学试题加大了对直线型函数图象的分析、归纳和应用能力的考查力度.通过各类问题与函数图象结合,考查同学们的空间观念和应用意识.一、运用直线规律,妙解营销问题例1如图1.某图书馆开展两种方式的租书业务:一种是使用会员卡.另一种是使用租书卡.使用这两种卡租书.租书金额y(元)与租书时间x(天)之间的关系如图1所示.
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