Systems of Equations

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Across
  1. 2. lines in a diagram that intersect or parallel
  2. 5. Two mathematical expressions that are equal
  3. 8. putting a number in place of a letter
  4. 9. A equation that has no value for the variable
  5. 10. get rid of a variable
Down
  1. 1. A letter that represents an unknown number
  2. 3. Solving a problem
  3. 4. A equation that has both sides equal
  4. 6. A equation that only one value for the variable
  5. 7. A way to do something