<image> After a city implemented the "plastic restriction order" in $$2008$$, it reduced plastic consumption by approximately $$40,000$$ tons.$$.$$ The survey and analysis results show that from $$2008$$ onwards, over five years, the amount of plastic consumption $$y$$ (in tens of thousands of tons) reduced by the city due to the implementation of the "plastic restriction order" increases linearly with time $$x$$ (in years) year by year. The relationship between $$y$$ and $$x$$ is shown in the figure.
$$(1)$$ Find the relationship equation between $$y$$ and $$x$$; 
$$(2)$$ Estimate the amount of plastic consumption reduced by the city in $$2011$$ due to the implementation of the "plastic restriction order."