functions.php

 <?php
 // Don't include the opening php tag
 
 // Add a tracking script to a particular page, just before the </body> tag
 add_action( 'wp_footer', 'tj_add_tracking_scripts' );
 function tj_add_tracking_scripts() {
  global $post;
  
  if ( is_page( 'your-page-slug' ) ) {
  ?>
  
  PASTE YOUR SCRIPT HERE
  
  <?php
  }
  
  if ( is_page( 'your-second-page-slug' ) ) {
  ?>
  
  PASTE YOUR SECOND SCRIPT HERE
  
  <?php
  }
  
  if ( is_page( 'your-third-page-slug' ) ) {
  ?>
  
  PASTE YOUR THIRD SCRIPT HERE
  
  <?php
  }
  
  if ( is_page( 'your-fourth-page-slug' ) ) {
  ?>
  
  PASTE YOUR OTHER SCRIPT HERE
  
  <?php
  }
  
  if ( is_page( 'your-fifth-page-slug' ) ) {
  ?>
  
  PASTE YOUR FIFTH SCRIPT HERE
  
  <?php
  }
 }