GraphingCalculator 3.5;
Window 46 6 693 646;
PaneDivider 153;
Slider -5 5;
SliderControlValue 0;
2D.Scale 0.5 0.5 2 2;
2D.BottomLeft -5.4375 -9.5625;
Expr y=-x+a;
Color 2;
Expr y=x+[-a+1];
Color 3;
Expr y=[-x+a]*[x+[-a+1]];