# How do you write an equation for a circle with Centre at (-1,- 6) with radius 1/3?

##### 1 Answer

Jun 21, 2016

#### Explanation:

The standard form of the equation of a circle is.

#color(red)(|bar(ul(color(white)(a/a)color(black)((x-a)^2+(y-b)^2=r^2)color(white)(a/a)|)))#

where (a ,b) are the coordinates of the centre and r, the radius.here a = -1 , b = -6 and r

#=1/3# Substitute these values into the standard equation.

#rArr(x+1)^2+(y+6)^2=1/9" is the equation of the circle"#