Question 123853
{{{red(y=2*abs(x))}}}


{{{green(y=(-1/2)abs(x))}}}


{{{drawing(600,600,-10,10,-10,10,
grid(1),
red(line(-5,10,0,0),
line(0,0,5,10)),
green(line(-10,-5,0,0),
line(0,0,10,-5)))}}}