Algebra crossword

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Across
  1. 2. line on a graph that opens up or down
  2. 3. y=ab^x
  3. 7. how many times a number goes into another
  4. 9. the number of a variable is multiplied by
  5. 10. relation between a set of inputs having one output each
  6. 13. the answer to an equation
  7. 14. value on either side of the = sign
  8. 16. equality between two ratios
  9. 17. small number on top of variable or number
  10. 18. multiplying a number by itself
  11. 19. a symbol(usually a letter)standing for an unknown number
Down
  1. 1. y=x^2
  2. 4. math expression of being equal
  3. 5. combine 2 or more numbers
  4. 6. equation inside the radical sign in the quadratic formula
  5. 8. y=mx+b
  6. 11. the term that does not change and does not contain any variables
  7. 12. highest or lowest point on a parabola
  8. 13. rate of change
  9. 15. times a number by another