Question 623308: Find the equation of the circle (in standard form) with radius 7 and center (0,-4.
Answer by jynobauan(1)   (Show Source):
You can put this solution on YOUR website! The standard equation for a circle is (x-h)² +(y-k)²=r²; where the center of the circle lies on (h, k) and the radius of the circle measures r.
If the center is at (0, -4) and the radius is 7, then the equation would be:
(x-0)² + (y+4)² = 7²
x² + y² + 8y + 16 - 49 = 0
Ans:
x² + y² + 8y - 33 = 0
:D
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