Center/Radius Form

This is the graph of (x - h)² + (y - k)² = r². Use the sliders to adjust the value of h, k, and r. 1. Adjust h only. What happens when h gets larger? Smaller? 2. Adjust k only. What happens when h gets larger? Smaller? 3. Adjust r only. What happens when h gets larger? Smaller? 4. Which variables influence where a circle is located? 5. Which variables influence a circle's size?