For the graphs of $f$ and $g$: Find the point(s) on the graph of $f$ and $g$ where the two graphs intersect, determine the first coordinate, $4$, and that is the desired value for $x$. | For the mapping diagrams of $f$ and $g$: Find the point(s) $x$ on the source axis with a single function arrow pointing to $f(x) = g(x)$. |
Martin Flashman, 7 December 2013, Created with GeoGebra