7-9

7-9 can refer to the following:
 * World 7-9 from various games
 * Level 7-9 from Mario & Wario
 * Stage 7-9 from Donkey Kong for the Game Boy
 * Giddy Sky 7-9 from Super Princess Peach
 * Room 7-9 from Mario vs. Donkey Kong 2: March of the Minis