Questions: Give the center and radius of the circle described by the equation and graph the equation. Use the graph to identify the domain and range.
(x+2)^2+(y+6)^2=25
Transcript text: Give the center and radius of the circle described by the equation and graph the equation. Use the graph to identify the domain and range.
\[
(x+2)^{2}+(y+6)^{2}=25
\]
Solution
Solution Steps
Step 1: Identify the center and radius of the circle
The given equation of the circle is:
\[
(x+2)^{2}+(y+6)^{2}=25
\]
This is in the standard form \((x-h)^2 + (y-k)^2 = r^2\), where \((h, k)\) is the center and \(r\) is the radius.
Step 2: Determine the center
From the equation \((x+2)^2 + (y+6)^2 = 25\), we can see that \(h = -2\) and \(k = -6\). Therefore, the center of the circle is:
\[
(-2, -6)
\]
Step 3: Determine the radius
The radius \(r\) is the square root of 25:
\[
r = \sqrt{25} = 5
\]
Final Answer
The center of the circle is \((-2, -6)\) and the radius is \(5\).