Quote:
In the question it is mentioned that line A passes through (r, s) in the coordinate plane. In option 1 it is clearly stated that line A passes through (0, 0). So, the slope becomes (s – 0)/(r – 0) = s/r.
That is correct.
Quote:
When it is mentioned that in the coordinate plane there is a point (r, s) so it can be fathomed that r is in +ve X quadrant and s is also in +ve Y quadrant.
No. We can not assume that. It is not stated that
r and
s are positive numbers.
Furthermore, nothing specific is stated about (
r,
s), except that it is a point on the coordinate plane. Therefore (
r,
s) can be
anywhere on the coordinate plane.