Math crossword puzzle

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Across
  1. 2. place where a line or curve crosses, or touches, the y-axis
  2. 6. variable in the absolute value bars
  3. 9. how fast something is changing in relation to something else
  4. 10. have the same solution set
  5. 11. set of values that we are allowed to plug into our function
  6. 12. a measure of its steepness
  7. 14. equation of degree 2
  8. 17. difference between the highest and lowest value from a set of data
  9. 19. a single data item
  10. 20. a letter or symbol that represents an unknown number or quantity
  11. 22. number that is multiplied by a variable
  12. 26. plane curve generated by a point moving
  13. 27. a value that, when multiplied by itself, gives the number
  14. 29. integer that is written along with a variable or it is multiplied by the variable
  15. 30. straight line that depicts the trend of the given scattered data plots
Down
  1. 1. two values are compared by the inequality symbols
  2. 3. y = mx + b
  3. 4. where a line crosses the x-axis on a graph
  4. 5. formula that gives the solutions of the general quadratic equation
  5. 7. total count of digits used to express numbers in a number system
  6. 8. Two expressions are equivalent if they can be simplified
  7. 13. algebraic equation that has a straight line graph
  8. 15. non-negative value of x without regard to its sign
  9. 16. identify vertex of parabola
  10. 18. inverse of a number or value
  11. 21. terms that have the same variable raised to the same power
  12. 23. number of times a number is multiplied by itself
  13. 24. number of times a number is used as a factor in a multiplication problem
  14. 25. simplest function satisfying the definition of a certain type of function
  15. 26. equation of line using one point on the line and the slope of the line
  16. 28. equation which each term is either a constant or contains only one variable