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i need help with finite mathmatics i do not understand this questions 

 

  1. True or false: A system comprising two linear equations in two variables has a unique solution if and only if the straight lines represented by the equations are nonparallel.
  2. True or false: Suppose the straight lines represented by a system of two linear equations in two variables are parallel to each other. Then the system has infinitely many solutions.
  3. True or false: If A and B are matrices of the same order, then .
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