Algebra Puzzle

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Across
  1. 2. Part of an expression separated by + or -
  2. 4. Highest exponent in an expression
  3. 6. Steepness of a line
  4. 8. Picture of a relation on a coordinate plane
  5. 10. A curve that form a U shape
  6. 12. To combine like terms equal ratios
  7. 15. A mathematical relationship between input and output
  8. 17. Mathematical sentence with an equal sign
  9. 18. Value Distance from zero
  10. 19. To rearrange an expression into multiplication
  11. 20. A graph that form a straight line
Down
  1. 1. Solution of an equation
  2. 3. A math phrase with numbers, variables, and output FunctionA
  3. 5. Symbol that represents an unknown value
  4. 7. Two expressions that are equal
  5. 9. A number without a variable
  6. 11. Mathematical operation with repeated multiplication
  7. 13. The highest something can go to
  8. 14. A statement comparing quantities using less than or equal to
  9. 16. Sentence showing two equal ratios