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Rzqust [24]
4 years ago
11

Which equation describes a circle with center (4, -7) and radius 9?

Mathematics
2 answers:
andrew11 [14]4 years ago
7 0

Answer:

(x - 4)² + (y + 7)² = 81

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

Here (h, k) = (4, - 7) and r = 9, thus

(x - 4)² + (y - (- 7))² = 9², that is

(x - 4)² + (y + 7)² = 81 ← equation of circle

evablogger [386]4 years ago
3 0

Answer:

81

Step-by-step explanation:

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