9.2.2 Solving Linear Systems in Three Variables

Question 1

notes

Answer 1

• You can solve a system of three linear equations in three variables by eliminating one of the variables and solving the resulting system of two equations.
  • An independent system of three equations in three unknowns has exactly one solution.
  • A dependent system of three equations in three unknowns has an infinite number of solutions.
  • An inconsistent system of three equations in three unknowns has no solutions