Html helper img src and class

Need Help
2

http://book.cakephp.org/3.0/en/views/helpers/html.html#creating-links

echo $this->Html->link('View image', [
    'controller' => 'Images',
    'action' => 'view',     
    1,
    '?' => ['height' => 400, 'width' => 500]
]);