Question

What are the dimensions of matrix M
?
[8, -9, 4]
[2, 6, -1]
(1 point)
Responses

8 x -1
8 x -1

3 x 2
3 x 2

2 x 3
2 x 3

6
6
Question 2
Part B

Using the matrix above, what is the value of M2,1
?

(1 point)

Answer 1

To determine the dimensions of matrix \( M \) from the provided data:

The matrix is:
\[
M = \begin{bmatrix}
8 & -9 & 4 \\
2 & 6 & -1
\end{bmatrix}
\]

This matrix has 2 rows and 3 columns. Therefore, the dimensions of matrix \( M \) are **2 x 3**.

For Question 2, the notation \( M_{2,1} \) refers to the element located at the second row and first column of the matrix.

From the matrix:
\[
M_{2,1} = 2
\]

So, the answers are:
- Dimensions of matrix \( M \): **2 x 3**
- Value of \( M_{2,1} \): **2**