Systems of Equations

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Across
  1. 4. math using numbers, letters, and symbols
  2. 5. two or more related linear equations
  3. 6. makes an equation true
  4. 7. a statement shown by =
Down
  1. 1. the graph is a straight line
  2. 2. a group of numbers, symbols, and variables
  3. 3. _ of operations