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Write the standard equation of the circle with center (0, 1) passing through the point (4, 9). A. x2 + (y + 1)2 = 40 B. (x − 1)2 − y2 = 80 C. x2 + (y − 1)2 = 80 D. (x + 1)2 + y2 = 40
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Write the standard equation of the circle with center (0, 1) passing through the point (4, 9).

A. x2 + (y + 1)2 = 40
B. (x − 1)2 − y2 = 80
C. x2 + (y − 1)2 = 80
D. (x + 1)2 + y2 = 40

User Biboswan
by
4.5k points

1 Answer

4 votes
the answer is C

Step-by-step explanation:

r² = (4-0)² + (9-1)² = 80

(x-0)² + (y-1)² = r²

x² + (y-1)² = 80
User Everaldo Aguiar
by
5.2k points
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