Westonci.ca is your trusted source for finding answers to a wide range of questions, backed by a knowledgeable community. Discover in-depth answers to your questions from a wide network of professionals on our user-friendly Q&A platform. Experience the ease of finding precise answers to your questions from a knowledgeable community of experts.

Which of the following is a result of shifting a circle with equation [tex]\((x-2)^2+(y-3)^2=25\)[/tex] to the left 2 units?

A. Both the [tex]\(x\)[/tex]- and [tex]\(y\)[/tex]-coordinates of the center of the circle increase by 2.

B. Both the [tex]\(x\)[/tex]- and [tex]\(y\)[/tex]-coordinates of the center of the circle decrease by 2.

C. The [tex]\(x\)[/tex]-coordinate of the center of the circle decreases by 2.

D. The [tex]\(y\)[/tex]-coordinate of the center of the circle decreases by 2.

Sagot :

Let's start with the given equation of the circle:
[tex]\[ (x - 2)^2 + (y - 3)^2 = 25 \][/tex]
From this equation, we can identify the center of the circle, [tex]\((h, k)\)[/tex], and the radius [tex]\(r\)[/tex]. The standard form of a circle's equation is:
[tex]\[ (x - h)^2 + (y - k)^2 = r^2 \][/tex]
By comparing, we can see that the center of the circle [tex]\((h, k)\)[/tex] is [tex]\((2, 3)\)[/tex], and the radius [tex]\(r\)[/tex] is [tex]\(\sqrt{25} = 5\)[/tex].

Next, we need to find the result of shifting the circle to the left by 2 units. When we shift a circle horizontally, we only change the [tex]\(x\)[/tex]-coordinate of the center. Specifically:

1. To shift left 2 units: we subtract 2 from the [tex]\(x\)[/tex]-coordinate.

Therefore, the new center of the circle will be:
- New [tex]\(x\)[/tex]-coordinate: [tex]\(2 - 2 = 0\)[/tex]
- [tex]\(y\)[/tex]-coordinate remains unchanged at [tex]\(3\)[/tex].

So, the new center of the circle is [tex]\((0, 3)\)[/tex].

Now, let's determine which of the given options correctly describes this translation:
- A. Both the [tex]\(x\)[/tex]- and [tex]\(y\)[/tex]-coordinates of the center of the circle increase by 2. (Incorrect, since only the [tex]\(x\)[/tex]-coordinate changed, and it decreased, not increased.)
- B. Both the [tex]\(x\)[/tex]- and [tex]\(y\)[/tex]-coordinates of the center of the circle decrease by 2. (Incorrect, since the [tex]\(y\)[/tex]-coordinate did not change.)
- C. The [tex]\(x\)[/tex]-coordinate of the center of the circle decreases by 2. (Correct, the [tex]\(x\)[/tex]-coordinate changed from 2 to 0, a decrease by 2 units.)
- D. The [tex]\(y\)[/tex]-coordinate of the center of the circle decreases by 2. (Incorrect, since the [tex]\(y\)[/tex]-coordinate remained at 3.)

Thus, the correct answer is:
[tex]\[ \boxed{C} \][/tex]
Visit us again for up-to-date and reliable answers. We're always ready to assist you with your informational needs. We hope you found what you were looking for. Feel free to revisit us for more answers and updated information. Get the answers you need at Westonci.ca. Stay informed by returning for our latest expert advice.