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

d = distance from point (2,3) to x+y-7=0d=2 from ΔPQR   PR2+RQ2=PQ2d2+RQ2=4222+RQ2=16RQ=14⇒tanθ=dQR=17|m+11−m|=17⇒m=1−71+7 or 1+71−7