Every matrix equation axdb corresponds to a vector equation with the same solution set. b. any linear combination of vectors can always be written in the formaxfor a suitable matrixaand vectorx. c. the solution set of a linear system whose augmented matrix is œa1 a2 a3 b is the same as the solution set ofaxdb, ifa d œa1 a2 a3 . d. if the equationaxdbis inconsistent, thenbis not in the set spanned by the columns ofa. e. if the augmented matrix œ a b has a pivot position in every row, then the equationaxdbis inconsistent