self test one and two

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Across
  1. 4. said to be this if points lie on a straight line
  2. 8. a pair of numbers for which the order of the numbers is important
  3. 9. includes a natural number and zero
  4. 10. horizontal axis in a number line
  5. 12. the first coordinate in an ordered pair
  6. 13. always the same distance apart and never touching
  7. 15. system of equations
  8. 16. form another way to write slope intercept form
  9. 17. the x coordinate of a point where a graph intersects the x-axis
  10. 20. the point in a coordinate plane associated with specific ordered numbers
  11. 22. the equation of a line in the form y=mx+b
  12. 24. also called linear equation
  13. 26. vertical number line in a coordinate plane
  14. 27. technique for representing a data set
Down
  1. 1. horizontal number line in a coordinate plane
  2. 2. the x and y axes in the coordinate plane
  3. 3. a plane in which an ordered pair can be located
  4. 5. a letter or number that locates something on a grid
  5. 6. the zero point on a number line
  6. 7. the second coordinate in an ordered pair
  7. 11. another name for ordinate
  8. 14. called this because it's graph is in a line
  9. 18. the four regions of a graph
  10. 19. a number that describes the direction and steepness of the line
  11. 21. the y- coordinate of a point where a graph crosses the y-axis
  12. 23. another name for vertical axis
  13. 25. another name for abscissa