Question Find the value of $b$ where the linear system with augmented matrix $\left[\begin{array}{lllll}1 & 0 & 0 & \mid & 1 \\ 0 & 1 & b & \mid & 2 \\ 0 & 2 & 4 & \mid & 4\end{array}\right]$ has infinitely many solutions.

Studdy Solution
Conclude that for the value $b = 2$, the system of linear equations represented by the augmented matrix has infinitely many solutions.
The value of $b$ for which the system has infinitely many solutions is $b = 2$.
The correct answer is C. 2.