Consider the matrix below.
(a) Determine the order of the matrix.
(b) Determine the order of the matrix and determine if the matrix is a row matrix, a column matrix, a matrix, or none of these.
$$\left[ \begin{array} { c c c }
- 9 & 3.9 & 8 \
- 8.2 & 7 & - 1 \
7 & 7.7 & - 7
\end{array} \right]$$
A) (a) $1 \times 3$
(b) column matrix

B) (a) $3 \times 1$
(b) row matrix

C) (a) $3 \times 3$
(b) square matrix

D) (a) $3 \times 3$
(b) none of these

Question

Consider the matrix below.
(a) Determine the order of the matrix.
(b) Determine the order of the matrix and determine if the matrix is a row matrix, a column matrix, a matrix, or none of these.
$$\left[ \begin{array} { c c c } 
- 9 & 3.9 & 8 \
- 8.2 & 7 & - 1 \
7 & 7.7 & - 7
\end{array} \right]$$
A) (a) $1 \times 3$
(b) column matrix

B) (a) $3 \times 1$
(b) row matrix

C) (a) $3 \times 3$
(b) square matrix

D) (a) $3 \times 3$
(b) none of these

Quizplus · Accepted Answer

The matrix has 3 rows and 3 columns, making it a $3 \times 3$ matrix, which is also known as a square matrix because the number of rows equals the number of columns.

Consider the Matrix Below [−93.98−8.27−177.7−7]\left[ \begin{array} { c c c } - 9 & 3.9 & 8 \\- 8.2 & 7 & - 1 \\7 & 7.7 & - 7\end{array} \right]​−9−8.27​3.977.7​8−1−7​​

Consider the Matrix Below $\left[ \begin{array} { c c c } - 9 & 3.9 & 8 \\- 8.2 & 7 & - 1 \\7 & 7.7 & - 7\end{array} \right]$