Slope of a line passing through P(2, 3) and
intersecting the line, x + y = 7 at a distance of
4 units from P, is :
${{\sqrt 7 - 1} \over {\sqrt 7 + 1}}$
${{\sqrt 5 - 1} \over {\sqrt 5 + 1}}$
${{1 - \sqrt 5 } \over {1 + \sqrt 5 }}$
${{1 - \sqrt 7 } \over {1 + \sqrt 7 }}$
