Systems of Equations

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Across
  1. 2. letter in equation representing an unknown value
  2. 3. number before a variable
  3. 5. putting a number in place of a variable
  4. 7. slope or rate of change
Down
  1. 1. getting rid of a value
  2. 4. problem to solve using x and y values
  3. 6. combining two or more values