The limit as x gets really, really large, as it approaches infinity, y is getting closer and closer and closer to 2 thirds. When we just look at the graph here, it seems like the same thing is happening from the bottom direction when x approaches negative infinity. So we could say the limit of f of x as x approaches negative infinity, that also looks like it's 2 thirds. We can use the exact same logic. When x becomes a very, very negative number, as it becomes further and further to the left on the number line, the only terms that are going to matter are going to be the 4x to the 5th and the 6x to the 5th. So this is true for very large x's. It's also true for very negative x's.