Exclude posts in a category on one page but show those posts on a different page

Question

We have a lot of blog post categories, and posts belonging to all but one category should show on the blog page. The other category should show on the Case Studies page.

The solutions I've found make a global exclusion using functions.php, which would break the Case Studies sort.

I'm comfortable working with PHP but not sure how I would go about excluding the category on just one page.

Edit: Here is an example of category exclusion that I think would globally exclude category with ID of 1 in functions.php:

function exclude_category($query) {
    $query->set('cat','-1');
    return $query;
}
add_filter('pre_get_posts','exclude_category');

Below is one that is specific to a feed page. Does it know to exclude it on the feed page because feed is the slug of the page to exclude for?

function exclude_category($query) {
    if ($query->is_feed) {
        $query->set('cat','-1');
    }
    return $query;
}
add_filter('pre_get_posts','exclude_category');

Answer 1

I resolved this by creating a custom page template for my Blog page to exclude posts of the category Case Studies.

I followed this tutorial more or less and was successful adding the category exclusion code in my original post to exclude the case studies.