Find the value of the determinant.
-$$\left| \begin{array} { r r }
- 6 & - 4 \
- 8 & 8
\end{array} \right|$$
A) 80
B) 88
C) -16
D) -80

Name: Find the value of the determinant. -\[\left| \begin{array} { r r } - 6 & - 4 \\ - 8 & 8 \end{array} \right|\] A) 80 B) 88 C) -16 D) -80
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Question

Find the value of the determinant.
-$$\left| \begin{array} { r r } 
- 6 & - 4 \
- 8 & 8
\end{array} \right|$$
A) 80
B) 88
C) -16
D) -80

Quizplus · Accepted Answer

The determinant of a 2x2 matrix $\left| \begin{array} { r r } a & b \ c & d \end{array} \right|$ is calculated as $ad - bc$. For this matrix, it is $(-6)(8) - (-4)(-8) = -48 - 32 = -80$.

Find the Value of the Determinant ∣−6−4−88∣\left| \begin{array} { r r } - 6 & - 4 \\- 8 & 8\end{array} \right|​−6−8​−48​​

Find the Value of the Determinant $\left| \begin{array} { r r } - 6 & - 4 \\- 8 & 8\end{array} \right|$