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WAEC Further Mathematics 2022 Objective — Question 12

Question 12 of 40 from the West African Examinations Council (WAEC) Further Mathematics 2022 Objective paper, with the correct answer and a full explanation.

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A linear transformation T is defined by T:(x,y)→(3x−y, x+4y). Find the image of (2,−1) under T.

  • A. (7,−2)Correct
  • B. (5,−2)
  • C. (−2,7)
  • D. (−7,2)

Explanation

T(2,−1) = (3(2)−(−1), 2+4(−1)) = (6+1, 2−4) = (7,−2).

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