Question

Write the augmented matrix for each system of equations.

9x-4y-5z=9
7x+4y-4z=-1
6x-6y+z=5

Answer 1

The correct answer choice is A

Explanation:

I just took the quiz and it's correct.

Answer 2

a.
`\left[\begin{array}{cccc}9&-4&-5&|9\\7&4&-4&|-1\\6&-6&1&|-5\end{array}\right]`

Explanation:

The given system of equation is

`9x-4y-5z=9`

`7x+4y-4z=-1`

`6x-6y+z=-5`

The coefficient matrix is :

`\left[\begin{array}{ccc}9&-4&-5\\7&4&-4\\6&-6&1\end{array}\right]`

The constant matrix is

`\left[\begin{array}{c}9\\-1\\-5\end{array}\right]`

The augmented matrix is obtained by combining the coefficient matrix and the constant matrix.

`\left[\begin{array}{cccc}9&-4&-5&|9\\7&4&-4&|-1\\6&-6&1&|-5\end{array}\right]`

The correct choice is A