GraphingCalculator 3.5;
Window 114 18 678 418;
PaneDivider 169;
2D.Scale 2.5 2.5 1 1;
2D.BottomLeft -20 -20;
Expr y=-x+3;
Color 2;
Expr y=x+7;
Color 3;
Expr y=[-x+3]*[x+7];