To complete the table for the equation \( y = 2x \), we will substitute the values of \( x \) into the equation to find the corresponding values of \( y \).
Here's the completed table:
\[ \begin{array}{|c|c|} \hline x & y \ \hline 0 & 2(0) = 0 \ 1 & 2(1) = 2 \ 3 & 2(3) = 6 \ \hline \end{array} \]
So, the completed table is:
\[ \begin{array}{|c|c|} \hline x & y \ \hline 0 & 0 \ 1 & 2 \ 3 & 6 \ \hline \end{array} \]