Title: The line in the Cartesian plane
Course: The line in the Cartesian plane

music

A line doesn’t have ends and it always goes to the same direction: it is straight, it has not curves

and always go to the same point.

Let’s use a small letter like r, for example, to name lines.

You can draw a line different orientation: it can be horizontal, vertical or orizontal.

Pre_requisites

To face the plan inherent to the Cartesian plan and the line, it is necessary that the student has a

knowledge and competence of the following topics.It is appropriate to adapt to acquisitions:

the real numbers and their biunique correspondence with the points of the directed line;

basic elements of plane geometry, with particular regard to the length of segments and areas;

algebraic equations and systems of first degree equations.