Plane analytic geometry straight line

Coordinate Systems The basic concept of analytic geometry is the establishment of a one-to-one correspondence between the points of the plane and number pairs (x, y). This correspondence may be done in a number of ways. The rectangular or cartesian coordinate system consists of two straight lines intersecting at right angles (Fig. 3-12). A point is designated by (x, y), where x (the abscissa) is the distance of the point from the y axis measured parallel to the x axis,... 

Analytical Geometry of Straight lines and Plane Curves... 

The method of reversible distillation trajectories calculation is described above in Section 4.4. To determine coefficients of linear equations, describing straight lines, planes, and hyperplanes, going trough stationary points, by coordinates of these points well-known formulas of analytic geometry are used. 

---