This be Maths

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Across
  1. 6. a line that touches the outside of a circle
  2. 8. 25.234 rounded to 2 sig fig
  3. 9. the most common measurement of distance
  4. 11. putting terms from an equation into brackets
  5. 12. distance round a shape
  6. 13. mathematical name for a whole number
Down
  1. 1. what this mean x > 3
  2. 2. east written as a bearing
  3. 3. another name for the steepness of a line
  4. 4. the most frequent value in a data set
  5. 5. jesus's favourite word
  6. 7. the order of calculations
  7. 10. when y increases, x increases the correlation is _________
  8. 14. we use this symbol to show this :