Unit 2 springboard

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Across
  1. 4. The fixed line which along with a fixed point called a focus
  2. 6. equation Set of points whose coordinates make the equations of the system true
  3. 8. Unfavorable circumstance or condition
  4. 10. For a function f(x) any value x such that f(x)=0
  5. 12. symmetry The line that divides a parabola into two congruent halves
  6. 14. Complex numbers whose product is a real number a bi and a-bi are complex conjugates
  7. 16. A solution of an equation
  8. 17. Provides a more favorable position
  9. 18. Points with reference to which any of curves is constructed
  10. 19. Disproves a statement or proposition
  11. 20. A quadratic function written in the form f(x)=a(x-h)2 k
Down
  1. 1. number A number of the form bi I= √1
  2. 2. The expression b squared -4ac describes the nature of a solution of a quadratic equation
  3. 3. Proving or disproving the correctness of a system
  4. 5. A method to determine a quadratic function that best fits a set of data
  5. 7. Equation with the form ax squared bx c=0
  6. 8. To take a specified source
  7. 9. A number in the form a bi
  8. 11. square Adding a constant to a quadratic expression to transform it into a perfect square
  9. 13. Postulate or theorem which enables a conclusion to be drawn
  10. 15. The set of points in a plane that are equidistant from a fixed point
  11. 20. The highest or lowest point value of a function