Generally speaking, that is not always possible. Or sometimes it is only approximately possible.
If you have the symbolic toolbox, then you can define f(x,y,z) and then you can attempt
g = solve(f(x,y,z), x)
If you manage to get a solution, then you could try
fsurf(g, [y_lowerbound y_upperbound z_lowerbound z_upperbound])
xlabel('y'); ylabel('z'); zlabel('x')
where y_lowerbound y_upperbound z_lowerbound z_upperbound are numeric values that give the bounds of the region you want to plot.
