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Find the coordinates of the centre of the circle 3x\(^2\) + 3y\(^2\) - 6x +...

Further Mathematics
WAEC 2019

Find the coordinates of the centre of the circle 3x\(^2\) + 3y\(^2\) - 6x + 9y - 5 = 0

  • A. (-3. \(\frac{9}{2}\))
  • B. (-1. \(\frac{3}{2}\))
  • C. (1, - \(\frac{3}{2}\))
  • D. (3. -\(\frac{9}{2}\))
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Correct Answer: Option C
Explanation

\(\frac{3x^2}{3} + \frac{3y^2}{3} - \frac{6x}{3} + \frac{9y}{3} - \frac{5}{3}\) = 0

2gx = -2x, 2 fy = 3y 

g = -1, f = \(\frac{3}{2}\)

Centre (1, - \(\frac{3}{2}\)) 


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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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