You can use GeoGebra to solve vector equations. You can solve them by using systems of equations, or by using the vectors, if you know the coordinates. There is also a separate entry about solving systems of equations with GeoGebra .                                                                                                                                                                                                                                          
     GeoGebra Instruction 1
CAS     and         Graphics     View     in         View     menu.         CAS.         It         is         wise         to         define         your         vectors         using         lowercase         letters         (for         example         u:=(1,2)     and         v:=(3,4)).         This         is         because         GeoGebra     interprets         your         input         as         a         point,         not         as         a         vector,         if         you         use         capital         letters!         Solutions(<equation>)     in         CAS,         where         you         replace         <equation>     with         your         equation.         You         also         need         to         type         the         variables         you         wish         to         solve         in         respect         to.