Answer :
We have the following:
[tex]\begin{gathered} 7-y=5x+11 \\ \end{gathered}[/tex]ordering, we have:
[tex]\begin{gathered} -7+y=-5x-11 \\ y=-5x-11+7 \\ y=-5x-4 \end{gathered}[/tex]Therefore, the equation is linear, since x is in the first level