Coordinate Geometry

Asked by chahat | 1st Mar, 2009, 10:22: PM

Expert Answer:

For any four points not to form a quadrilateral, three points should be collinear.

Method 1: To find which three are collinear, Find the equation of line passing through the any two points.

The equation of the line is

Now if any of the remaining two points satisfies the line implies that three points are collinear.

Method 2: Show the area enclosed by three coordinate points equal to zero.

Answered by  | 2nd Mar, 2009, 10:00: AM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.