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WAEC Mathematics 2022 Objective — Question 46

Question 46 of 50 from the West African Examinations Council (WAEC) Mathematics 2022 Objective paper, with the correct answer and a full explanation.

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The straight line y=mx−4 passes through the point (−4,16). Calculate the gradient of the line.

  • A. −5Correct
  • B. −3.5
  • C. 3
  • D. 5

Explanation

16=m(−4)−4 → 16=−4m−4 → 20=−4m → m=−5.

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