7. PYQ - Find the value of 'b' and 'c'

If the points \(P(-1, -4)\), \(Q(b, c)\) and \(R(5, -1)\) are collinear and if \(2b + c = 9\), then obtain the values of \(b\) and \(c\). 
 
Answer:
 
Area of the triangle \(=\)
 
b=i,c=i
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