24.1 Circle
Circle
Lessons
Notes:
The conics form of a circle with center $\left( {h,\;k} \right)$ and radius $r$ is:
${\left( {\frac{{x  h}}{r}} \right)^2} + {\left( {\frac{{y  k}}{r}} \right)^2} = 1$

1.
graphing a circle
Sketch each circle and state the:
i) center
ii) radius

2.
converting a circle equation to conics form by “completing the square”
$4{x^2} + 4{y^2} + 24x  8y + 15 = 0$ 
3.
finding the equation of a circle given its properties
Find the equation of a circle with: