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Mathematics 9 Online
OpenStudy (sarahc):

Circle P has a radius of 8 units with center P at (2, -1). Which equation defines circle P? (x + 2)2 + (y – 1)2 = 64 (x – 2)2 + (y + 1)2 = 64 (x – 2)2 + (y + 1)2 = 8 (x + 2)2 + (y – 1)2 = 8

OpenStudy (campbell_st):

the general form of the circle is \[(x -h)^2 + (y - k)^2 = r^2\] (h, k) is the centre and r is the radius... your question has centre (2, -1) and r = 8 substitute to get your answer

OpenStudy (sarahc):

Oh, so a??

OpenStudy (sarahc):

wait...

OpenStudy (sarahc):

B

OpenStudy (sarahc):

@campbell_st

OpenStudy (campbell_st):

B is correct

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