The equation of the circle whose center is at (2, 1) and radius is 3 is (x + 2)² + (y + 1)² = 9 (x - 2)² + (y - 1)² = 9 (x - 2)²
+ (y - 1)² = 3
1 answer:
Answer:
(x - 2)² + (y - 1)² = 9
Step-by-step explanation:
The standard form equation of a circle with center (h, k) and radius r is ...
(x -h)² +(y -k)² = r²
Filling in (h, k) = (2, 1) and r = 3, you have ...
(x -2)² +(y -1)² = 9
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