Dynamic Category Title

I’m trying to alter query so the category_name is equal to the Title of the Page plus the word “-resources”. Can anyone help with this?

<?php
$my_query = new WP_Query(‘category_name=’page_title()-resources’&showposts=3’);
while ($my_query->have_posts()) : $my_query->the_post();
$do_not_duplicate = $post->ID;?>