Fordi

/**
 * Draw a line graph in Chrome/Chromium's dev console
 * Examples:
 *	console.lineGraph([[5, 3], [10, 8], [-10, 1], [7, -3], [3, 0]], 320, 240);
 * 	console.lineGraph(Math.sin, 420, 240, -Math.PI, Math.PI, 0.001);
 *	console.lineGraph(function (x) { 
 		return [ 
 			Math.sqrt(1 - x*x) + Math.abs(x) - 0.75, 
			(Math.abs(x)-Math.sqrt(1 - x*x)) / 2 - 0.25 
		];