How do you write the equation of the circle with center and radius (1,-3), 10?
The standard form of the equation of a circle is.
where (a,b) are the coordinates of the centre and r, the radius.
in this question a = 1 , b = -3 and r = 10
Substitute these values into the standard equation.
#rArr(x-1)^2+(y+3)^2=100" is the equation"#