You can use FTP to edit edit your .htaccess file, which should be found in the root WordPress install.
For example…
Redirect 301 /old-url /some-new-url
Put the old page first and just a / for the homepage second.
Note: Make your edits after the # END WordPress line
Note 2: There are a ton of plugins that can help with redirects but since this site is about coding I suggest the .htaccess way, which is what a plugin would do for you