inserting image into footer

i seem to be having trouble inserting an image into my footer.php

the image is just not showing up. Here is a copy of my footer.php along with the different types of tags i have tried to use to insert the image:

<p class="creditr">

<img src="/images/tux.png" />
<img src="images/tux.png" />
<a href="http://wordpress.org/"><img src="images/tux.png" alt="WordPress" /></a>
<?php bloginfo('template_directory') ?>/images/tux.png
</p>

		<?php do_action('wp_footer'); ?>

</body>

</html>

i have also tried all those tags without the /> at the end