Linear Graphs Puzzle

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Across
  1. 3. A number that has exactly two factors: 1 and itself.
  2. 6. Point where the line crosses the x-axis.
  3. 7. Suburb in which Sacred Heart is located.
  4. 10. Value of four squared.
  5. 11. Other 9 Foundation teacher.
  6. 14. Animal that goes moo.
  7. 15. The sum of nine and six.
  8. 17. First greek letter.
  9. 19. Represented by m (rise/run).
  10. 20. Point where the line crosses the y-axis.
Down
  1. 1. Biggest land animal.
  2. 2. Funniest number.
  3. 4. Animal with eight limbs.
  4. 5. Maths is _______.
  5. 8. Your teacher's surname.
  6. 9. A line that is parallel to the y-axis.
  7. 12. Value of three times four.
  8. 13. First colour in the rainbow.
  9. 16. A 90 degree angle is called a _____ angle.
  10. 18. A line that is parallel to the x-axis.