AM-787
Equation of a circle (general form)
A Math · Secondary 3 · Medium · Equation of a circle (general form)
A circle has equation \x^2 + y^2 - 6x + 8y + 9 = 0\.
What are the coordinates of its centre?
What are the coordinates of its centre?
- (3, −4)
- (−3, 4)
- (3, 4)
- (−3, −4)
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