00:02
In this problem, we are going to use the formula for the standard form of a circle to write the equation of a circle with given information.
00:12
So basically, to write the equation of the circle, we need to fill in three places.
00:22
We need to fill in the center, which is in the form hk.
00:30
So the h will go here.
00:36
The k will go there.
00:37
And we need to fill in the radius that will go there.
00:41
So we've been given two bits of information.
00:45
We were told that our circle is centered at negative 1, negative 2, and that there's a point on our circle, and it's 1 -0.
00:58
So a quick picture, at negative 1 -2 is the center, and at 1 -0 is a point that our circle goes through.
01:08
There's kind of a sketch of what we're doing.
01:10
So we know right now that our center, hk, is negative 1 and negative 2...
