If you know the standard equation of a circle, you can describe the circle by naming its center and radius. Then you can use this information to graph the circle.
Communications When you make a call on a cell phone, a tower receives and transmits the call. A way to monitor the range of a cell tower system is to use equations of circles. Suppose the equation
Know | Need | Plan |
---|---|---|
The equation representing the cell tower's position and range | To draw a graph | Determine the values of (h, k) and r in the equation. Then draw a graph. |
The center is
To graph the circle, place the compass point at the center
What is the standard equation of each circle?
What is the center and radius of each circle?