WAEC Further Mathematics 2025 Objective — Question 22
Question 22 of 40 from the West African Examinations Council (WAEC) Further Mathematics 2025 Objective paper, with the correct answer and a full explanation.
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The gradient of point Q on the curve y = 7x²+2x+1 is 30. Find the coordinate of Q.
- A. (2,33)Correct
- B. (4,30)
- C. (6,11)
- D. (9,17)
Explanation
dy/dx = 14x+2 = 30 gives x=2. Then y = 7(4)+2(2)+1 = 33, so Q = (2,33).
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