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function setup() {
createCanvas(410, 410);
background(250,250,250);
xCord=0;
yCord=400;
}
function draw(){
stroke(0,0,0);
strokeWeight(50)
line(0,400,400,400);//x-axis
line(0,400,400,0);
line(0,400,0,0);//y-axis
strokeWeight(100);
stroke(250,250,0);
point(xCord,400-yCord);
xCord=xCord+1;
yCord=(pow(.2*xCord-20,2))-1;
}