## babybats 3 years ago Write the equation of the circle with center (-2, -5) and containing the point (-10, -20). Use the ^ key for the exponents. Write your answer as the example: (x+7)^2+(y-8)^2=100

1. zordoloom

Start by finding the distance between the 2 points: (-2, -5) and (-10, -20). This will give you the radius.

2. rizwan_uet

here you have two points (-2, -5) and (-10,-20) first find the distance between these points to find the radius then use standard circle equation

3. zordoloom

4. rizwan_uet

5. babybats

so basically whenever i get a problem like this i need to find the distant between the two points

6. zordoloom

You are given the center point which was (-2, -5). The question also stated that you want it to cross through a specific point being (-10, -20). Therefore, you need to find the distance between the center and where the circle will cross. |dw:1353438876550:dw|

7. zordoloom

So by finding the distance between the center point and the outside point, you'll find the radius.

8. babybats

oh...okay..thanks!

9. zordoloom

Yep.