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In the xy-plane, the graph of the linear function f contains the points (2, 10) and (4, 16).

Which of the following defines f?

  1. f(x) = 3x + 10
  2. f(x) = 3x + 4
  3. f(x) = 6x - 2
  4. f(x) = 1/3x + 28/3

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