How do you find the equation of a circle passes through the origin and has its center at (-1,-9)?
1 Answer
Jun 20, 2016
Explanation:
If a circle has a center at
then it has a radius of r=
the general formula for a circle with center
So in this particular case:
or
graph{(x+1)^2+(y+9)^2=82 [-24.15, 21.45, -21.76, 1.06]}