math

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Across
  1. 2. A measure of steepness of a line, represented by m
  2. 5. Lines or planes that intersect to form right angles
  3. 8. y=mx+b
  4. 11. y minus y1 equals m(x-x1)
  5. 14. occurs when y equals zero
  6. 16. ax plus by=c
  7. 17. The opposite of a number
  8. 18. occurs when x equals zero
  9. 19. expressions where any two values are compared by the inequality symbols such as, '<', '>', '≤' or '≥'
Down
  1. 1. a(n) = an-1 + d
  2. 3. output, y values
  3. 4. A value that makes the equation true
  4. 5. Lines or planes that never intersect
  5. 6. an ordered pair of numbers a and b, written a / b where b does not equal 0
  6. 7. the process of solving a system of simultaneous equations by using various techniques to remove variables successively.
  7. 9. a(n)=a+d(n-1)
  8. 10. inputs, x values
  9. 12. A sentence that uses one of the following symbols: < , > , ≤, ≥
  10. 13. The point where a graph intersects the y-axis
  11. 15. a relationship between inputs where each input is related to exactly one output