Circle Equation
1. The problem is to analyze the given equation of a circle: $$(x + 3)^2 + (y + 5)^2 = 25$$
2. This equation is in the standard form of a circle: $$(x - h)^2 + (y - k)^2 = r^2$$ where $(h, k)$ is the center and $r$ is the radius.
3. By comparing, we identify the center as:\
$$(-3, -5)$$
4. The radius squared is 25, so the radius is:\
$$r = \sqrt{25} = 5$$
5. Therefore, the circle has center $(-3, -5)$ and radius 5.
6. The intercepts can be found by setting $x=0$ or $y=0$:
- For $x=0$, substitute into the equation:
$$ (0+3)^2 + (y+5)^2 = 25 \Rightarrow 9 + (y+5)^2 = 25 \Rightarrow (y+5)^2 = 16 $$
$$ y + 5 = \pm 4 \Rightarrow y = -5 \pm 4 $$
So, $y = -1$ or $y = -9$ giving points $(0, -1)$ and $(0, -9)$.
- For $y=0$, substitute into the equation:
$$ (x+3)^2 + (0+5)^2 = 25 \Rightarrow (x+3)^2 + 25 = 25 \Rightarrow (x+3)^2 = 0 $$
$$ x + 3 = 0 \Rightarrow x = -3 $$
So, the only x-intercept is $(-3,0)$.
Final answer:
The circle has center $(-3, -5)$ and radius $5$. Its x-intercept is $(-3, 0)$, and y-intercepts are $(0,-1)$ and $(0,-9)$.