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WAEC Further Mathematics 2019 Question 8

Question 8

Matrices and Determinants

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

  1. A.Q′(5, −8)
  2. B.Q′(−8, 5)
  3. C.Q′(5, −3)
  4. D.Q′(−5, −8)
Show the answer and explanation

Answer: A (Q′(5, −8))

Explanation

T(−3, 2) = (3 + 2, −8) = (5, −8).