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Trapezoid Formed By Lines

#2761.13

The x-axis and the three lines x = 1, x = 4 and y = mx + 4 form a trapezoid. If the area of the trapezoid is 7, then what is m?

  1. -1/2
  2. -2/3
  3. -3/2
  4. -2
  5. none of these
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