GraphingCalculator 3.2;
SignificantDigits 8;
FontSizes 18 12 9;
BackgroundColor 128 128 128;
Slider -5 5;
SliderSteps 30;
SliderControlValue 6;
SliderVariable k;
2D.Scale 0.5 0.5 2 2;
2D.BottomLeft -7.09375 -8.21875;
Expr [x-0]^2+[y-0]^2=9;
Color 2;
Expr [x-0]^2+[y-k]^2=9;