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一元一次不等式(组)问题是历年来中考命题的热点之一,本文以近几年来各地中考题为例对常见的考点作简单的分析和归纳．一、考查不等式概念及基本性质不等式的基本性质是解不等式的重要依据,在三条基本性质中要特别注意不等式两边同时乘以或除以一个负数时,不等号的方向要改变．例1 (2005年山东潍坊)已知实数a、b在数轴上对应的点如图1所
The one-time inequality (group) problem is one of the hot topics of the examination proposition in the past years. In this paper, the common test points are briefly analyzed and summarized by taking the exams in various fields in recent years as an example. First, examine the inequality concept and the basic nature of the basic property inequalities is an important basis for solving inequalities, in the three basic properties, we must pay special attention to inequalities on both sides while multiplying or dividing by a negative number, the direction of inequality signs to change. Example 1 (Weifang, Shandong, 2005) Known real numbers a and b correspond to points on the number axis as shown in Figure 1.