Math puzzle

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Across
  1. 7. occurs when the variables are eliminated, and the resulting statement is false
  2. 8. used when comparing individual values
  3. 9. an operation that reverses another resulting in the identity value
  4. 11. the range of the middle 50% of data
  5. 13. point-slope form
  6. 14. the largest value of a data set
  7. 15. the middle number of a data set
Down
  1. 1. lines have the same slope but different y-intercept
  2. 2. occurs when the variables are eliminated and the resulting statement is true
  3. 3. point on y axis
  4. 4. represent data over ranges of values
  5. 5. vertical/horizontal change
  6. 6. the smallest value of a data set
  7. 10. standard form
  8. 12. slope intercept form