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Author(s): 
Pages: 30-31
Year: Issue:  Z1
Journal: School Journal of Mathematics

Keyword:  函数表达式一次函数确定方法函数图象取值范围自变量待定参数函数关系式举例说明思路方法;
Abstract: <正>一次函数表达式y=kx+b(k≠0)中有两个待定参数k和b,确定了它们就确定了一个一次函数表达式,故一般需要两个独立的条件才能确定一次函数表达式.现举例说明确定一次函数表达式的方法,供同学们参考.
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