Determinants and Cramer's Rule
1 Evaluate a Second-Order Determinant
- $\left| \begin{array} { c c } \frac { 1 } { 3 } & \frac { 1 } { 6 } \\ - \frac { 4 } { 7 } & \frac { 3 } { 4 } \end{array} \right|$

Multiple Choice

Determinants and Cramer's Rule
1 Evaluate a Second-Order Determinant
- $\left| \begin{array} { c c } \frac { 1 } { 3 } & \frac { 1 } { 6 } \\ - \frac { 4 } { 7 } & \frac { 3 } { 4 } \end{array} \right|$

A) $\frac { 29 } { 84 }$
B) $\frac { 13 } { 84 }$
C) $\frac { 1 } { 72 }$
D) $- \frac { 53 } { 168 }$