Position

class Example extends Phaser.Scene
{
    preload ()
    {
        this.load.setBaseURL('https://cdn.phaserfiles.com/v385');
        this.load.image('grid', 'assets/pics/debug-grid-1920x1920.png');
        this.load.image('atari', 'assets/sprites/atari130xe.png');
    }

    create ()
    {
        this.add.image(0, 0, 'grid').setOrigin(0);

        //  Images are positioned at x,y based on the center of the image

        const x = 320;
        const y = 100;

        this.add.image(x, y, 'atari');

        //  You can also use the x and y properties:

        const image2 = this.add.image(0, 0, 'atari');

        image2.x = 640;
        image2.y = 200;

        //  Or the setPosition method, which allows for chaining:

        this.add.image(0, 0, 'atari').setPosition(320, 320);
    }
}

const config = {
    type: Phaser.AUTO,
    parent: 'phaser-example',
    scene: Example
};

const game = new Phaser.Game(config);