Plugin for Functions

Hello, I am interested in creating my first plugin.
I have done research but am still confused on how to implement a options check box section to the admin page.

As a simple example;
remove_meta_box( 'formatdiv' , 'post' , 'normal' );
is a function which can be added to functions.php to remove the formatdiv metabox from the posts.
How would I add a checkbox to this so it could be enabled and disabled from a admin page?
I do not need to know how to make the admin page, just the checkbox part.