Q.
A line with positive rational slope, passes through the point A6,0 and is at distance of 5 units from B1,3. The slope of line is
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a
158
b
815
c
58
d
85
answer is B.
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Detailed Solution
Equation of line through point A6,0 and having slope m is y−0=mx−6,m>0or mx−y−3m=0, m>0 ….(1)Distance of this line from point B1,3 is 5.So, m−3−6m1+m2=5⇒3+5m2=251+m2⇒9+30m=25⇒m=1630=815
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