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一次函数是初中数学中的重要内容之一.同学们都知道一次函数的图象是一条直线,但在实际应用时,由于函数自变量的取值范围不同,会得到不同形状的函数图象.一、直线型图象
One-off function is one of the important contents of mathematics in junior high school.All the students know that the image of a linear function is a straight line, but in practical applications, different shape function images will be obtained due to the range of function arguments. First, the linear image