Answer
This scaling of row 1 by a constant multiple $k$ multiplies the determinant by $k$.
Work Step by Step
$1\begin{vmatrix}4&-4\\-3&1\end{vmatrix}-0\begin{vmatrix}-3&-4\\2&1\end{vmatrix}+1\begin{vmatrix}-3&4\\2&-3\end{vmatrix}=-8+0+1=-7$
$k\begin{vmatrix}4&-4\\-3&1\end{vmatrix}-0\begin{vmatrix}-3&-4\\2&1\end{vmatrix}+k\begin{vmatrix}-3&4\\2&-3\end{vmatrix}=-8k+0+1k=-7k$
