直线方程与两条直线的位置关系是高考考查的主要内容.考查直线方程的特征值(例如斜率、截距)、直线的平行与垂直的条件,以及与距离有关的问题.在选择题和填空题方面,大都属于中、低档题,考查直线的基本概念和几何要素;而在解答题方面,直线往往与圆、圆锥曲线综合考查,具有一定的灵活性.同时,我们要了解直线的斜截式方程与一次函数的关系,对有关函数、不等式等代数问题能够借助直线方程进行解决,提高解题的综合运用能力,比较典型的是线性规划问题 The relationship between the linear equation and the two straight lines is the main part of the college entrance examination examining the eigenvalues ​​(such as slope and intercept) of the straight line equation, the parallel and vertical conditions of the straight line, and distance-related problems. Questions, most of them belong to the low-grade questions, examining the basic concepts of straight lines and geometric elements; and in the answer questions, the line is often combined with round, conical curves, with some flexibility, while we have to understand the oblique line Equation and the linear function of the relationship between the functions, inequalities and other algebraic problems can be solved by means of linear equations to improve the comprehensive use of the problem-solving ability, is more typical of linear programming problems