>    restart;

>    with(DEtools):

>    DEplot(3*D(y)(x)*y(x)=x,y(x),x=-4..4,[[y(-3)=-2]],
colour=blue,linecolor=[red]);

[Maple Plot]

>    S:=dsolve({3*y(x)*diff(y(x),x)-x,y(-3)=-2},y(x));assign(S);

S := y(x) = -1/3*(3*x^2+9)^(1/2)

>    plot(y(x),x=-4..4);

[Maple Plot]