A) \[1\]
B) \[-1\]
C) \[2\]
D) \[0\]
Correct Answer: B
Solution :
[b] Since\[P(-1,1)\] is the mid-point of line segment joining \[A(-3,6)\] and \[B(1,6+4)\] |
\[\therefore \,\,\,\,(-1,1)=\left( \frac{-3+1}{2},\frac{b+b+4}{2} \right)\,\Rightarrow \,\,b+2=1\Rightarrow b=-1\] |
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