Question 840446
y is easy to isolate.


{{{xy+2y=5x+4}}}
{{{(x+2)y=5x+4}}}
{{{y=(5x+4)/(x+2)}}}.  There is the function; y depends on x.


The restriction is {{{x<>-2}}};
DOMAIN:  (-oo, -2) AND (-2,  oo)