Parabola graph of -2(x+3)^2+2

						var board = JXG.JSXGraph.initBoard('box1', {
boundingbox: [-10, 10, 5, -20],showcopyright: false,showNavigation: false,axis: true,defaultAxes: {
    y: { ticks: {majorHeight: 5 } },
	x: { ticks: {majorHeight: 5 } },
  }, 
});
 
board.create('functiongraph', [function(x){ return -2*(x+3)*(x+3)+2; },-10, 10],{strokeColor: "blue",strokewidth:2})

The image appears in the following posts

f(x) is a quadratic function whose graph has a vertex at the point (-3 , 2) and has a y-intercept at the point (0 , -16).

Triangle posted 1 year ago