The slope of the line may be determined by taking the changes of the coordinates between two arbitrary points and of the line:
The equation of the line is
Two non-vertical lines of the plane are parallel if and only if their slopes are equal.
In the previous picture, the blue line given by has slope , whereas the red one given by has slope . Also notice that positive slopes represent ascending graphs and negative slopes represent descending graphs.
|Date of creation||2013-03-22 14:48:10|
|Last modified on||2013-03-22 14:48:10|
|Last modified by||pahio (2872)|
|Synonym||angle coefficient (?)|