Do the Graphs of the Equations Form Coincident Lines? (It $$\begin{array} { l } 2 x + y = 4 \\2 y + x = 4\end{array}$$

Do the graphs of the equations form coincident lines? (It is not necessary to graph them.) $$\begin{array} { l } 2 x + y = 4 \\2 y + x = 4\end{array}$$

A) yes
B) no
C) insufficient information