Estudo da reta

Synopsis: Study of the line - Analytic Geometry. Change the slope of the moving point A. The point P describes a line through A with slope given. Move the point X (P) and see as the point P moves on the straight. Remember that the slope is given by the angle between the X axis and the straight line in a counterclockwise direction.
Source: GeoGebra - eloy.junior.
URL: http://tube.geogebra.org/student/m32768