8.6 - Equations of a circle - Self Discovery

Play with variables [b]h[/b], [b]k[/b] and [b]r[/b] to discover their effect on the circles properties.
What do [b]h[/b], [b]k[/b] and[b] r[/b] represent?
– D Assael, Mr Brown

Information: 8.6 - Equations of a circle - Self Discovery