Question

Identify the elementary row operation(s) being performed to obtain the new row-equivalent matrix. Original Matrix New Row-Equivalent Matrix 3 −1 −4 −5 3 8 3 −1 −4 4 0 −4 Add 3 times Row 2 to Row 1. Add 3 times Row 1 to Row 2. Multiply Row 2 by three. Multiply Row 1 by three. Interchange Row 1 and Row 2.

Answer 1

Add 3 times row 1 to row 2 to obtain the new matrix

Explanation:

Attached below is the solution

To obtain the new matrix we will add 3 times Row 1 to row 2

`\left[\begin{array}{ccc}3&-1&-4\\-5&3&8\\\end{array}\right]` original matrix

`\left[\begin{array}{ccc}3&-1&-4\\4&0&-4\\\end{array}\right]` New Matrix