00:01
In this problem, we are going to use the equation of a circle written in standard form, the formula for that in order to write the equation of a given circle.
00:11
And we want to write the equation of the circle that has a center at negative 2, negative 5.
00:21
That's our h and our k.
00:24
And then the circle also goes through the point 1 -9.
00:31
Okay, so we're going to start out by placing our h and our k, our center, and for h and k in our formula.
00:41
So we're going to put in the negative 2 for our x coordinate and our negative 5 for our y coordinate.
00:49
All we need now is the r squared, and we'll have the equation of this circle.
00:55
So let's clean this up a bit.
00:57
We wouldn't leave it x minus negative 2.
00:59
We'll write x plus 2 there...
