SOLUTION: What plots do I use to do this? The question is: Graph the circle x^2+y^2+8x+4y+16=0

Algebra ->  Circles -> SOLUTION: What plots do I use to do this? The question is: Graph the circle x^2+y^2+8x+4y+16=0      Log On


   

Question 638429: What plots do I use to do this?
The question is:
Graph the circle x^2+y^2+8x+4y+16=0
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Graph the circle x^2+y^2+8x+4y+16=0
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Complete the square on the x-terms and on the y-terms.
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x^2+8x+16 + y^2 + 4y + 4 = 4
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Factor:
(x+4)^2 + (y+2)^2 = 4
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Plot a circle with center at (-4,-2) with a radius of sqrt(4) = 2
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Cheers,
Stan H.
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