Question 886785
The equation {{{x^2+y^2=9}}} is a circle with center (0,0) and radius of {{{3}}}


{{{ drawing( 500, 500, -10, 10, -10, 10,
grid(1),
graph( 500, 500, -10, 10, -10, 10, 0),
circle(0,0,3)

) 
}}}