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the answer is
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consider the diagram,
equation of the line joining (1,3) & (-3,7)
(y-1)/(x-3) = (7-3)/(-3-1)⇒x+y = 4
distance from P(x₁, y₁) to ax+by+c=0
= |ax₁+by₁+c|/√(a²+b²)
since p is the origin (0,0) here a=1, b=1, c=-4
distance = 2√2 = 2.83
equation of the line joining (1,3) & (-3,7)
(y-1)/(x-3) = (7-3)/(-3-1)⇒x+y = 4
distance from P(x₁, y₁) to ax+by+c=0
= |ax₁+by₁+c|/√(a²+b²)
since p is the origin (0,0) here a=1, b=1, c=-4
distance = 2√2 = 2.83
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