Algebra crossword puzzle

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Across
  1. 5. the set of second numbers in an ordered pair
  2. 6. a set of ordered pairs
  3. 8. the vertical axis on a coordinate plane
  4. 10. the set of first numbers of the ordered pairs
  5. 12. a value substituted for an x-value in a function
  6. 13. the x value of an ordered pair
Down
  1. 1. illustrates how each element of the domain is paired
  2. 2. the y value of an ordered pair
  3. 3. the x-intercepts of the graph of a function
  4. 4. the result of substituting a value into a function
  5. 7. the horizontal axis on a coordinate plane
  6. 9. a relation in which each element of the domain is paired
  7. 11. the point at which the x-and the y-axis intersect on the coordinate plane