Coordinate Algebra

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Across
  1. 5. lines lines in the same plane that never intersect
  2. 6. any set of ordered pairs
  3. 7. equations equations that have the same solution
  4. 8. a letter that represents a number
  5. 10. where the line crosses the y axis
  6. 12. ordered pairs that identify points on a coordinate plane
  7. 14. a comparison of two numbers by division
Down
  1. 1. reciprocals the slopes of two lines that are perpendicular
  2. 2. where the line crosses the x axis
  3. 3. a rectangular arrangement of numbers in rows and columns
  4. 4. lines two lines that intersect to form right angles
  5. 9. inequalities two inequalities that are joined by the word and or the word or
  6. 11. a ratio of two quantities measured in different units
  7. 13. whole numbers and their opposites
  8. 15. a number, a variable, or the product of a number and a variable