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在实际生活中,存在着一类决策问题,解这类决策问题是根据题意,列出两个一次函数解析式,然后进行合理的大小比较就可以巧妙地解答.现举数例进行说明,供同学们学习时参考.例l某学校要印制一批《学生手册》,甲印刷厂提出:每本收1元印刷费,另收500元制版费;乙印刷厂提出:每本收2元印刷费,不收制版费.(1)分别写出甲、乙两厂的收费y_甲(元)、y_乙(元)与印制数量x(本)之间的关系式;(2)问:该学校选择哪家印刷厂印制《学生手册》比
In real life, there is a class of decision-making problems, such decision-making problem is based on the theme of the problem, lists two linear functions of the analytical formula, and then a reasonable size comparison can be cleverly answered. For students to learn reference example l a school to print a group of “student handbook”, a printing plant proposed: each received 1 yuan printing fee, another 500 yuan plate fee; B printing proposed: each received 2 (1) Separately write out the charges of A, B and B plants, respectively; () y_ B 2) Q: Which printing house does the school choose to print a “student handbook” ratio?