A) 1
B) 3
C) 6
D) 0
Correct Answer: C
Solution :
Lines are concurrent, if \[\left| \,\begin{matrix} 4 & 3 & -1 \\ 1 & -1 & 5 \\ b & 5 & -3 \\ \end{matrix} \right|\,=0\] Þ \[4(3-25)-3(-3-5b)-1(5+b)=0\] Þ \[-88+9+15b-5-b=0\Rightarrow -84+14b=0\] \ \[b=6\].You need to login to perform this action.
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