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一次函数是初中代数中的重要内容之一,建立一次函数的关系式虽然并不复杂,但在不同类型题目面前,不少同学往往感到手足无措,不能迅速找到解题思路.笔者在此归
First-order function is one of the important contents of junior high school algebra. Although the relation of establishing first-order function is not complicated, in the face of different types of questions, many students often feel overwhelmed and can not find solutions to problems quickly.