1 ) 

$\left\{ \begin{gathered} \overrightarrow x = - 3\overrightarrow i - 3\overrightarrow j \hfill \\ \overrightarrow y = - 2\overrightarrow i \hfill \\ \end{gathered} \right.$

2 ) 

$\left\{ \begin{gathered} \overrightarrow x = 2\overrightarrow i - 2\overrightarrow j \hfill \\ \overrightarrow y = \frac{{11}}{8}\overrightarrow i \hfill \\ \end{gathered} \right.$

3 )  $\left\{ \begin{gathered} \overrightarrow x = - 2\overrightarrow i - 2\overrightarrow j \hfill \\ \overrightarrow y = 5\overrightarrow j \hfill \\ \end{gathered} \right.$

4 ) 

$\left\{ \begin{gathered} \overrightarrow x = 3\overrightarrow j - 3\overrightarrow i \hfill \\ \overrightarrow y = 3\overrightarrow j \hfill \\ \end{gathered} \right.$