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# Help

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351
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What is the equation of a circle with a center at (–2, 4) and a radius of 4?

Guest Feb 13, 2016

#1
+2493
+15

$$(x-a)^2 + (y-b)^2 = r^2 \text{(equation of circle )}$$

where your:

a=-2      (x-a)^2=(x+2)^2

b=4        (y-b)^2=(y-4)^2

r=4         r^2=16

https://www.desmos.com/calculator/ivygaohoig

play with desmos and you will understand

Solveit  Feb 13, 2016
Sort:

#1
+2493
+15

$$(x-a)^2 + (y-b)^2 = r^2 \text{(equation of circle )}$$

where your:

a=-2      (x-a)^2=(x+2)^2

b=4        (y-b)^2=(y-4)^2

r=4         r^2=16

https://www.desmos.com/calculator/ivygaohoig

play with desmos and you will understand

Solveit  Feb 13, 2016
#2
+92254
0

That is a BIG compliment.

Congratulations :)

Melody  Feb 14, 2016

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