Question

Does anyone know the answer to this!?

Answer 1

`|A_y|=\left|\begin{array}{cc}12&7\\ \\17&-51\end{array}\right|`

Explanation:

You can use these Cramer's formulas to solve for x and y:

`x=(|A_x|)/(|A|),\\ \\y=(|A_y|)/(|A|),`

where

`|A|=\left|\begin{array}{cc}12&-13\\ \\17&-22\end{array}\right|\\ \\ \\|A_x|=\left|\begin{array}{cc}7&-13\\ \\-51&-22\end{array}\right|\\ \\ \\|A_y|=\left|\begin{array}{cc}12&7\\ \\17&-51\end{array}\right|`

So,

`|A_y|=\left|\begin{array}{cc}12&7\\ \\17&-51\end{array}\right|`