What is the standard form of the equation of the circle in the graph?
A. (x + 1)^2 + (y + 2)^2 = 16
B. (x - 1)^2 + (y - 2)^2 = 4
C. (x + 1)^2 + (y + 2)^2 = 4
D. (x - 1)^2 + (y - 2)^2 = 16

Question

What is the standard form of the equation of the circle in the graph?
A. (x + 1)^2 + (y + 2)^2 = 16
B. (x - 1)^2 + (y - 2)^2 = 4
C. (x + 1)^2 + (y + 2)^2 = 4
D. (x - 1)^2 + (y - 2)^2 = 16

anonymous · Answer

attachment

jasmineflvs · Answer

just asec I will try to find the answer...

anonymous · Answer

ok thank you

jasmineflvs · Answer

http://ww2.valdosta.edu/~alazari/math1111/Circle.html hope this helps!! :)

jasmineflvs · Answer

do you understand it now?

anonymous · Answer

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an example  is that 

these first 2 positions flip signs  - to + and + t0-       and the term next to equal sign is the radius of you take sqrt

anonymous · Answer

ok

anonymous · Answer

i don't understand what i'm plugging that information into lol

radar · Answer

Sorry the diameter is 8 so the radius is 4

anonymous · Answer

:/

anonymous · Answer

a or d since radiaus is 4     4^2 is 16

anonymous · Answer

ok thank you

anonymous · Answer

since cent is 1,2
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notice i flipped the signs