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mezya [45]
3 years ago
6

Identify the radius and center. x^2 + y^2 + 2x + 4y + 1 = 0

Mathematics
1 answer:
melamori03 [73]3 years ago
6 0

Answer:

Center:-1,-2

Radius: 2

Step-by-step explanation:

Ok, get the form of a circle from this equation-

(x+2)^2+(y+2)^2=4

Since this is the form of a circle, I can figure out the center and the radius from here,

r=2

h=-1

k=-2

Center:-1,-2

Radius: 2

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madreJ [45]

Answer:

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Step-by-step explanation:

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<em>2) plug in the point (8, -18) to find the value of a</em>

-18 = a(8 - 0)^2 - 2

-18 = a(64) - 2

-16 = a(64)

-16/64 = a

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<em>3) plug in the value of a into the equation</em>

<u>f(x) = -1/4(x - 0)^2 - 2</u>

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3 years ago
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