A set of points satisfying certain condition or conditions is called Locus.
A point belonging to the locus is called a ‘Point on the Locus’.
Chord of Locus:
A line–segment joining the two points of a Locus is a Chord of the Locus.
Equation of a locus:
The equation satisfied by the coordinates of all the points on a locus and by no others is called the equation of /to the locus.
The – intercept of a line is -axis of the point where it intersects the -axis and its -axis intercept is the -coordinate of the point where it intersect the -axis.
A line parallel to -axis (horizontal line) has no -intercept.
A line parallel to -axis (vertical line ) has no – intercept.