Feedback on solution-sets

[danmargalit]

In reference to version cebba0d48f43784542dd70c9421777691a9419c6

In the beginning of the inhomogeneous section, it says that p is a solution to Ax=0, when it should be Ax=b.

In general, when an example is referred to immediately afterward, it probably should not be in a knowl. This means that it is part of the narrative.

[QBobWatson]

In general, when an example is referred to immediately afterward, it probably should not be in a knowl. This means that it is part of the narrative.

I don't think this is always true. In the homogeneous section, you don't need to show the whole example to remark that "two free variables means the solution set is a plane". The latter is the sentence they'll be expected to know on an exam; the hidden example is not.

Following this reasoning, in the inhomogeneous section, perhaps we should pull the following paragraph back into the example?