高中数学中的二元一次不等式知识点不仅仅是教材中的重点,而且还是高考试题中必定出现的内容。所以学生本身都比较重视这部分知识的学习。但是学习的过程中经常会遇到问题,尤其是二元一次不等式所表示平面区域的判断。本文就针对这一问题作简单分析,提出了具体的判断方法,希望可以为相关人员提供建议。 Binary inequality knowledge points in high school mathematics is not only the focus of teaching materials, but also the content of the entrance exam questions. Therefore, students are more emphasis on this part of the knowledge of learning. However, the process of learning often encounter problems, especially the judgment of the planar area represented by the binary inequality. In this paper, a simple analysis of this issue, put forward specific judgments, hoping to provide advice for the relevant personnel.