Write the equation of a circle with the following parameters:
Center at x = -9, y = -10
Diameter = 10

Question

Write the equation of a circle with the following parameters:
Center at x = -9, y = -10
Diameter = 10

anonymous · Answer

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anonymous · Answer

I have given you the equation of a circle in your previous question. If you keep copying down the answers from the website without understanding anything, you will never learn.

anonymous · Answer

What don't you understand about how to do it and maybe we can help you

anonymous · Answer

I just dont understand any of it

anonymous · Answer

The equation of a circle is
$$(x-a)^2 + (y-b)^2 = r^2$$
where (a,b) is the centre of the circle and r is the radius. What is not clear?

anonymous · Answer

So choose C.???

anonymous · Answer

I mean D.

anonymous · Answer

So for example
$$(x-1)^2 + (y-2)^2 = 4$$ is a circle with the centre at (1,2) and radius 2

anonymous · Answer

Do you know how diameter is related to the radius?

anonymous · Answer

No i dont

anonymous · Answer

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