Equation of the straight line passing through two given points.

This rule gives us a one-line, mental method to write down the equation of the line passing through any two given points.

 This rule gives us a one-line, mental method to write down the equation of the line passing through any two given points.
In the below app change the positions of the two points and use their co-ordinates to calculate the equation of the line passing through those points.

StraightLine(TwoPointForm)