Answer TRUE or FALSE x 0 is a solution of the linear system
     Answer TRUE or FALSE.  x = 0 is a solution of the linear system Ax = b when b = 0.  A basic variable of a linear system Ax = b is a variable that corresponds to a pivot column of the augmented matrix Ab.  A basic variable of a linear system Ax = b is a variable that corresponds to a pivot column of the coefficient matrix A.  A free variable of a linear system Ax = b is a variable that corresponds to a column of the coefficient matrix A that is not pivot column.  Whenever a consistent system Ax = b has free variables, then the system has Infinitely many solutions.  x = 0 is not a solution of the linear system Ax = b when b notequalto 0. 
  
  Solution
A basic variable in a linear system is a variable that corresponds to a pivot column in the coefficient matrix.
So, 1 ) False and 2) True
If a column of the coefficient matrix is not a pivot column, the corresponding variable is free and the system
of equations has a nontrivial solution
3) True.
Whenever a consistent system Ax= b has free varibles then the system has infinitely many solutions: 4) True

