Post-UTME Mathematics 2015 Objective — Question 31
Question 31 of 40 from the Post-UTME Screening (Post-UTME) Mathematics 2015 Objective paper, with the correct answer and a full explanation.
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The point (x,y) at which the curve y=3x²-4x+1 has a gradient of -10 is
- A. (-1,8)Correct
- B. (2,341)
- C. (0,1)
- D. (1,0)
Explanation
dy/dx=6x-4=-10 gives x=-1; y=3(1)+4+1=8, giving the point (-1,8).
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