A) 4
B) 2
C) 1
D) \[-4\]
E) none of these
Correct Answer: A
Solution :
In given equation \[a=2,g=-\frac{9}{2},f=-\frac{7}{2},h=\frac{7}{2},b=3,c=k\] The given line represents a pair of lines, if \[abc+2fgh-a{{f}^{2}}-b{{g}^{2}}-c{{h}^{2}}=0\] \[\Rightarrow \] \[6k+\frac{441}{4}-\frac{98}{4}-\frac{243}{4}-\frac{49k}{4}=0\] \[\Rightarrow \] \[k=4\]You need to login to perform this action.
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