Mathematical Terms

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Across
  1. 4. Descartes idea of describing a point on the plane was systemized
  2. 5. Pair set of two well-ordered real numbers
  3. 6. other term for x-coordinate
  4. 8. the abscissa of the point of intersection of the graph of a function
  5. 9. Wilhelm Leibniz heintroduced the words function, coordinate, and now used in mathematics
  6. 12. coordinate system/system of two perpendicular number of line
Down
  1. 1. form four regions
  2. 2. horizontal number line
  3. 3. intersecting at a point
  4. 7. the ordinate of the point of intersection of the graph of a function
  5. 10. vertical number line
  6. 11. real number on the y-axis which is the second coordinate of a point