Matrix are used to represent numbers in rows and columns.
The position of the matrix elements are:
- [tex]\mathbf{7 \to a_{21}}[/tex]
- [tex]\mathbf{-5 \to a_{34}}[/tex]
- [tex]\mathbf{-1 \to a_{12} }[/tex]
Matrix elements are named using the row and column, the element belongs to.
For instance:
The name of an element in the third row and fifth column of a matrix b is [tex]\mathbf{ b_{35}}[/tex]
Using the above explanation, the name of 7, -5 and -1 is as follows;
7 belongs to row 2 and column 1
So, the name is: [tex]\mathbf{ a_{21}}[/tex]
[tex]\mathbf{7 \to a_{21}}[/tex]
-5 belongs to row 3 and column 4
So, the name is: [tex]\mathbf{ a_{34}}[/tex]
[tex]\mathbf{-5 \to a_{34}}[/tex]
-1 belongs to row 1 and column 2
So, the name is: [tex]\mathbf{ a_{12}}[/tex]
[tex]\mathbf{-1 \to a_{12} }[/tex]
Read more about position of matrix at:
https://brainly.com/question/17409182
