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Solving problems in co-ordinate geometry with given set of conditions causes difficulties at times One such case is equation of family of lines. The equation y -1 = m (x -2) represent a family of lines passing through (2,1). But this does not include the line x -2 =0. Since the slope of the line x -2 =0 is infinity. Therefore in case there are two solutions to a problem and only one solution is being obtained aigebralcally we have to re-examine. In previous question if d=2 then

Answer»

There is only one LINE (x-axis) OUTING intercept 2 between the parallel lines.
There is only one line (y-axis) cutting intercept 2 between the parallel lines
There are two lines through opigin cutting intercepts of 2 units between the parallel lines
none of these

Answer :C


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