Algebra 1 crossword

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Across
  1. 3. a relation where each input is paired with one output
  2. 6. Distance from 0
  3. 8. a mathematical phrase that use number, variables, or both
  4. 9. the set of inputs of a function
Down
  1. 1. the set of outputs of a function
  2. 2. letter or symbol used to represent one or more numbers
  3. 4. the numbers 1,2,3,4, and so on
  4. 5. mathematical statement shows two expressions are equal
  5. 7. two items, written in a specific order