Discover the answers you need at Westonci.ca, a dynamic Q&A platform where knowledge is shared freely by a community of experts. Connect with a community of experts ready to help you find solutions to your questions quickly and accurately. Join our platform to connect with experts ready to provide precise answers to your questions in different areas.

What is the center of a circle represented by the equation [tex](x+9)^2+(y-6)^2=10^2[/tex]?

A. [tex]\((-9, 6)\)[/tex]
B. [tex]\((-6, 9)\)[/tex]
C. [tex]\((6, -9)\)[/tex]
D. [tex]\((9, -6)\)[/tex]

Sagot :

To determine the center of a circle represented by the equation [tex]\((x + 9)^2 + (y - 6)^2 = 10^2\)[/tex], we need to compare it to the standard form of a circle's equation, which is:

[tex]\[ (x - h)^2 + (y - k)^2 = r^2. \][/tex]

In this standard form:
- [tex]\((h, k)\)[/tex] is the center of the circle.
- [tex]\(r\)[/tex] is the radius of the circle.

Given the equation [tex]\((x + 9)^2 + (y - 6)^2 = 10^2\)[/tex], we observe the following:

- The term [tex]\((x + 9)\)[/tex] can be rewritten in the form [tex]\((x - (-9))\)[/tex]. This translation means that [tex]\(h = -9\)[/tex].

- The term [tex]\((y - 6)\)[/tex] already matches the form [tex]\((y - k)\)[/tex], indicating that [tex]\(k = 6\)[/tex].

Therefore, the center of the circle is [tex]\((h, k)\)[/tex], which translates to:

[tex]\[ (h, k) = (-9, 6). \][/tex]

So, the correct answer is [tex]\((-9, 6)\)[/tex].