《直线》这一章是研究各种运动方向和位置关系的基本工具,也是后续几章学习的基础.1.1　考点简析1　本章的考点本章的考点共有11个.即有向线段,两点间的距离,线段的定比分点,直线的方程,直线的斜率,直线的点斜式、斜截式、两点式、截距式方程,直线方程的一般式,两条直线平行与 The chapter “Lines” is the basic tool for studying the relationship between various movement directions and position, and it is also the basis for subsequent chapters. 1.1 Brief analysis of the examination sites 1 The examination sites in this chapter There are 11 examination sites in this chapter. There are directed lines, between two points. The distance, the line point of the scale, the equation of the line, the slope of the line, the point of the line oblique, oblique intercept, two-point, intercept equation, the general equation of the linear equation, two parallel lines and