Question: Convert exprseq to vector

I've somehow understood that sequences are extremly powerful so far. However I have to admit that they are quite complicated to read and understand, and I still am a bit confused how to work with them properly.

The attached example shows a very simple sequence.

My question is - how can I use its results further on?

What I for example would like to have, is a plot, where the first results in the array are the x- values, and the second are used as the y-values. Before that I need to extract both of them into vectors.

Could this be done in one operation, or can I somehow iterate throught the members of the returned values?

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