Determine whether the matrix is invertible.
-$$\left[ \begin{array} { r r }
2 & 9 \
1 & 14
\end{array} \right]$$
A) Yes
B) $\mathrm { No }$

Name: Determine whether the matrix is invertible. -\[\left[ \begin{array} { r r } 2 & 9 \\ 1 & 14 \end{array} \right]\] A) Yes B) $\mathrm { No }$
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Question

Determine whether the matrix is invertible.
-$$\left[ \begin{array} { r r } 
2 & 9 \
1 & 14
\end{array} \right]$$
A) Yes
B) $\mathrm { No }$

Quizplus · Accepted Answer

A matrix is invertible if its determinant is non-zero. The determinant of this matrix is $2*14 - 9*1 = 28 - 9 = 19$, which is non-zero. Therefore, the matrix is invertible.

Determine Whether the Matrix Is Invertible [29114]\left[ \begin{array} { r r } 2 & 9 \\1 & 14\end{array} \right][21​914​]

Determine Whether the Matrix Is Invertible $\left[ \begin{array} { r r } 2 & 9 \\1 & 14\end{array} \right]$