Lily's Algebra Cross

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Across
  1. 2. an ordered list of numbers in which the difference between each pair of consecutive terms, or numbers in the list is the same
  2. 6. an=a+r(n-1)
  3. 7. an=a(r)^n-1
  4. 11. consisting of two terms
  5. 14. the difference between the highest and lowest numbers in a set
  6. 15. the vertical line that goes through the vertex of a parabola so the left and right sides of the parabola are symmetric
  7. 18. y=mx+b
  8. 20. ax^2+bx+c=0
Down
  1. 1. the inverse of a function f is also a function if and only if no horizontal line intersects the graph of f more than once
  2. 3. switches the input and output values of the original equation
  3. 4. an ordered list of numbers in which the common ratio between each pair of consecutive terms is the same
  4. 5. pairs inputs with outputs
  5. 8. an equation that has only one answer for y for every x
  6. 9. consisting of several terms
  7. 10. consisting of three terms
  8. 12. the point at the intersection of the parabola and its line of symmetry
  9. 13. x-values
  10. 16. a point on the y-axis, through which the slope of the line passes
  11. 17. consisting of one term
  12. 19. used solving quadratic equations in the form "x² = b."