# Circle Equation: Center (h,k)

- Author:
- Tim Brzezinski

This applet accompanies the

*Standard Form of the Equation of a Circle (Part 3)*packet you received at the beginning of class today. Complete this activity and then answer the questions that appear below the applet.Suppose

*P(x,y)*= any point that lies on a circle with center (h,k) and radius*r*, where*r*> 0.*Use what you've observed to write an equation that expresses the relationship among**x*,*y*, and*r*. (No need to square any binomial expressions!)