$$\begin{aligned}
& 2 a - 3 b + 2 c = 0 \\
& a \cdot b + b \cdot c = 9
\end{aligned}$$ Given that, what is $\mathbf { b } ^ { \mathbf { 2 } }$? A) 6 B) 8 C) 9 D) 12 E) 16
$$\begin{aligned}
& 2 a - 3 b + 2 c = 0 \\
& a \cdot b + b \cdot c = 9
\end{aligned}$$
Given that, what is $\mathbf { b } ^ { \mathbf { 2 } }$?
A) 6
B) 8
C) 9
D) 12
E) 16