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一次函数与方程、不等式关系密切,近年来成为各地命题的热点,下面对一次函数与不等式相结合的问题结合例题进行分析.例1如图1,一次函数y=kx+b
The first function is closely related to the equations and inequalities. In recent years, it has become a hot spot for local propositions. In the following, the problem of combination of a function and an inequality is analyzed. Example 1 As shown in Figure 1, the first function y=kx+b