Task F of Doom

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Across
  1. 4. solution by substituting one equation into another
  2. 6. where both lines ______ is the solution to a system
  3. 7. (x,y)
  4. 8. number of solutions when both lines are the exact same when graphing a system
Down
  1. 1. Ax+By=C
  2. 2. ________ inverses
  3. 3. solution by finding _________ inverses
  4. 5. solution by graphing the equations