Here are some examples of the post that are currently tagged graph and this tag is used in the "broader sense". (So they might need retagging, if the consensus is that this tag is for questions about plotting graphs of functions.)
- http://math.stackexchange.com/questions/268206/lower-semicontinuity-and-closed-graphlower semicontinuity and closed graph
- http://math.stackexchange.com/questions/304601/fm-1-to-m-2-is-continuous-iff-its-graph-is-compact$f:M_1\to M_2$ is continuous iff its graph is compact.
- http://math.stackexchange.com/questions/326902/does-closed-graph-imply-closed-rangeDoes Closed Graph imply Closed Range
- http://math.stackexchange.com/questions/342007/operator-graph-questionOperator Graph Question