Get the answers you need at Westonci.ca, where our expert community is always ready to help with accurate information. Our platform connects you with professionals ready to provide precise answers to all your questions in various areas of expertise. Connect with a community of professionals ready to help you find accurate solutions to your questions quickly and efficiently.

Select the correct answer.

Which equation represents a circle with center [tex]\( T(5, -1) \)[/tex] and a radius of 16 units?

A. [tex]\((x-5)^2 + (y+1)^2 = 16\)[/tex]

B. [tex]\((x-5)^2 + (y+1)^2 = 256\)[/tex]

C. [tex]\((x+5)^2 + (y-1)^2 = 16\)[/tex]

D. [tex]\((x+5)^2 + (y-1)^2 = 256\)[/tex]


Sagot :

Let's solve the problem step by step to find the correct equation of the circle given its center and radius.

1. Identify the given information:
- The center of the circle is [tex]\( T(5, -1) \)[/tex].
- The radius of the circle is 16 units.

2. Recall the standard form of the equation of a circle:
The standard form of a circle's equation with center [tex]\((h,k)\)[/tex] and radius [tex]\(r\)[/tex] is:
[tex]\[ (x - h)^2 + (y - k)^2 = r^2 \][/tex]

3. Substitute the given center and radius into the standard equation form:
- Given center [tex]\((h,k) = (5, -1)\)[/tex],
- Given radius [tex]\(r = 16\)[/tex],

Substitute [tex]\(h = 5\)[/tex], [tex]\(k = -1\)[/tex], and [tex]\(r = 16\)[/tex] into the standard equation:
[tex]\[ (x - 5)^2 + (y - (-1))^2 = 16^2 \][/tex]

4. Simplify the equation:
- [tex]\(y - (-1)\)[/tex] simplifies to [tex]\(y + 1\)[/tex],
- [tex]\(16^2\)[/tex] calculates to 256.

Therefore, the equation now looks like:
[tex]\[ (x - 5)^2 + (y + 1)^2 = 256 \][/tex]

5. Verify which of the given multiple-choice options matches our derived equation:

- Option A: [tex]\((x - 5)^2 + (y + 1)^2 = 16\)[/tex] [tex]\( \quad \)[/tex] (Incorrect, as the right-hand side should be 256, not 16)
- Option B: [tex]\((x - 5)^2 + (y + 1)^2 = 256\)[/tex] [tex]\( \quad \)[/tex] (Correct, matches our derived equation)
- Option C: [tex]\((x + 5)^2 + (y - 1)^2 = 16\)[/tex] [tex]\( \quad \)[/tex] (Incorrect, as both the signs and the right-hand side values are incorrect)
- Option D: [tex]\((x + 5)^2 + (y - 1)^2 = 256\)[/tex] [tex]\( \quad \)[/tex] (Incorrect, the signs inside the parentheses are incorrect)

Therefore, the correct choice is:

[tex]\[ \boxed{B} \][/tex]
Thanks for stopping by. We strive to provide the best answers for all your questions. See you again soon. We appreciate your time. Please revisit us for more reliable answers to any questions you may have. Your questions are important to us at Westonci.ca. Visit again for expert answers and reliable information.