Question

Which matrix represents this system of equations?

-2y + 7z = 10
9x + 5y = 1
2x + z = -5

Answer 1

0, -2, 7, 10

9, 5, 0, 1

2, 0, 1, -5

Explanation:

Answer 2

The augmented matrix is ...

`\left[\begin{array}ccc0&-2&7&10\\9&5&0&1\\2&0&1&-5\end{array}\right]`

Explanation:

Missing variables essentially have a coefficient of zero. Coefficients are listed in the same order in each row, and the matrix is "augmented" by the column of constants on the right side of each equation.