Can I get help finding out what I$\text{'}$m doing wrong? I$\text{'}$m trying to dind the graph of it but No matter what constant I put it or what I set the min$/$max to$,$ its just comes out blank

x$\text{'}=200$x$-4$y

y$\text{'}=-150$y$+2$x

I got the implicit Solution to be

Implicit solution$=200$ln$($y$)+150$ln$($x$)-2$x$-4$y$=$C

For some constant C

ContourPlot