Words and items found in class

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Across
  1. 2. this is the study of words, symbols, and their abstract meanings and is taught during 4th and 7th period
  2. 4. He said 'imagination is more important than knowledge'
  3. 5. the vertical change over the horizontal change in a graph
  4. 7. steepness of a line
  5. 10. collection of all input values
  6. 12. this is the negation of a conditional statement
  7. 15. He said 'the time is always right to do what is right'
  8. 18. this is an expression with many terms
  9. 21. this is the person taking a teacher's place in class
  10. 23. this description of slope moves down and to the right
  11. 24. this is something that is earned and not given freely
  12. 26. we need two points for this to exist
Down
  1. 1. rule stating for every input value there exists an output value
  2. 3. She said 'no one can make you feel inferior without your consent'
  3. 6. taking ownership of what we say and what we do
  4. 8. this is the study of our economy using Algebra and is taught during 3rd period
  5. 9. this is what we look for and rhymes with unity
  6. 11. a statement containing an if and only if part
  7. 13. this determines if an algebraic function is linear or non-linear
  8. 14. our one and only grand latino
  9. 16. this is the study of the size, shape and position of 2 dimensional shapes and 3 dimensional figures
  10. 17. when we exchange the hypothesis with the conclusion
  11. 19. this description of slope moves up and to the right
  12. 20. this slope describes a horizontal line in a graph
  13. 22. this slope describes a vertical line in a graph
  14. 25. location or meeting place of two lines intersecting