COORDINATE GEOMETRY

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Across
  1. 5. c in the y = mx+c formula represents y-____________
  2. 7. The gradient of a straight line that is parallel to the x-axis is ____________.
  3. 8. To find the point of intersection we have to solve the _______________ equations
  4. 9. The straight line that slopes upwards has a ___________ gradient
  5. 10. The gradient if a straight line that is parallel to y-axis is ____________
  6. 11. If the area of polygon is zero it means the points are _______________
  7. 13. The track of a point while it is moving subject to a certain condition
Down
  1. 1. This formula is normally used in finding the equation of locus.
  2. 2. The degree of steepness of a graph at any point.
  3. 3. Point in the middle of two points.
  4. 4. In the area of polygon formula, the area is ___________ if the vertices are arranged in clockwise order.
  5. 6. Two lines are __________________ if the product of their gradients is -1.
  6. 12. Two lines are parallel if their gradients are ___________