Update main.tex

Author: annadavismath

SAND-0010/main.tex

@@ -13,7 +13,12 @@
 \section*{Linear Combinations and Alternative Coordinate Systems}
 \end{onlineOnly}
 
+\section*{How to Read a Coordinate System}
+% https://www.geogebra.org/classic/dpwbkjhq
 
+\begin{center}
+    \geogebra{dpwbkjhq}{800}{600}
+\end{center}
 
 \section*{Explorations}