Question

Write the equation for a circle that satisfies the given conditions.

Answer 1

Answer: B.
`(x-11)^2+(y+2)^2=81`

Explanation:

The standard form of a circle is described by the following equation:

`(x-a)^2+(y-b)^2=r^2`

Your center is
`(11,-2)` and your radius is
`r=9`

Plug them into the equation and this is what you get:

`(x-11)^2+(y-(-2))^2=9^2`

Simplify and you get:

`(x-11)^2+(y+2)^2=81`

Your answer should be b.