prologues:=2; 
beginfig(1);
u:=0.025cm;
color col,loc;
col=(0.,0.,0);
loc=col;
pickup pencircle scaled 1;
path a;
loc:=(0.0,0.0,0.0);
a:= (360.0u,1100.0u)--(360.0u,900.0u);
linecap:= rounded;
draw a withcolor red ;
pickup pencircle scaled 1;
path a;
loc:=(0.0,0.0,0.0);
a:= (460.0u,1000.0u)--(260.0u,1000.0u);
linecap:= rounded;
draw a withcolor green ;
pickup pencircle scaled 1;
draw (266.0u,1076.0u)..(322.0u,1040.0u)..(360.0u,1000.0u)..(386.0u,960.0u)..(422.0u,900.0u);
draw (386.0u,960.0u)--(386.0u,1000.0u) dashed evenly scaled 1.5;
dotlabel.top(btex $x^0 $ etex, (386.0u,1000.0u));
draw (386.0u,960.0u)--(360.0u,960.0u) dashed evenly scaled 1.5;
dotlabel.lft(btex $y^0 $ etex,(360.0u,960.0u));
pickup pencircle scaled 1;
draw (322.0u,1000.0u)--(322.0u,1040.0u) dashed evenly scaled 1.5;
dotlabel.bot(btex $x^1 $ etex,(322.0u,1000.0u));
draw (322.0u,1040.0u)--(360.0u,1040.0u) dashed evenly scaled 1.5;
dotlabel.rt(btex $y^1 $ etex,(360.0u,1040.0u));
label.rt(btex $y=f(x)$ etex,(422.0u,900.0u));
endfig;
end