# How do you write the equation for a circle with center of circle (-3,0) radius with endpoint (3,0)?

##### 1 Answer

Aug 27, 2017

#### Explanation:

The equation of a circle is

If the center is at

We can substitute

#(x-h)^2 + (y-k)^2 = r^2#

#(x- color(blue)((-3)))^2 + (y-color(blue)0)^2 = color(red)6^2#

#(x+3)^2 + y^2 = 36#

We can check this by graphing. The center of the circle is at