For which value of k, the given system of linear equations is inconsistent ?
$3x+6y + 3z = 4 $
$x+ ky + 2z= 6 $
$z= 7 $
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → $k = 2$
For inconsistent
$|A|=\begin{vmatrix}3&6&3\\1&k&2\end{vmatrix}=0$
$⇒3k-6=0⇒k=2$