Update main.tex

Author: annadavismath

VEC-0005/main.tex

@@ -35,7 +35,7 @@ \subsection*{How to Create a Coordinate System}
     \item Orthogonality of axes
 \end{itemize}
 
-Representation of points and vectors was dictated by the established coordinate system.
+Representation of points and vectors is dictated by the established coordinate system.
 
 What if we started from scratch?  Take two vectors, choose the location of the origin, then use the two vectors to create a coordinate grid.  The interactive below allows you to move points $A$ and $B$ to create two vectors.  Move the slider to see how different points in the plane can be represented using this coordinate grid, and how the representation of a fixed point changes depending on what grid is chosen.