Linear Crossword

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Across
  1. 6. Non-linear graph.
  2. 8. Divide by zero error.
  3. 10. Considered Equal in value.
  4. 12. A number used to multiply a quantity.
  5. 14. Horizontal gradient.
Down
  1. 1. Fixed value.
  2. 2. Slope is downhill.
  3. 3. Also known as the slope.
  4. 4. Need a pair of them to plot.
  5. 5. Rise/Run both positive.
  6. 7. Straight line.
  7. 9. A Mathematical Statement.
  8. 11. Like for like.
  9. 13. (0,0).