linear equation in two variables and probablity

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Across
  1. 4. how much one thing is compared to another.
  2. 8. a marked point on a cartesian plane.
  3. 9. the rate at which something occurs over a particular period of time or in a given sample.
  4. 10. a statement that values two mathematical expressions are equal.
Down
  1. 1. is a quantity that may change in context of a mathematical problem.
  2. 2. equation an equation between two variables that gives a straight line when plotted on a graph.
  3. 3. a mean of solving a mathematical problem.
  4. 5. a fixed reference point from the measurements of the coordinates.
  5. 6. a result of a single trail of an outcome.
  6. 7. the extent to which an event is likely to occur.