How should I dual boot 2 versions of OSX?

I have an iMac G3 and Mac OS X Cheetah. The machine came with Panther and OS9 (on the same partition). However I have an OSX 10.0 (for blast to the past needs) disc laying around here. I don't have the Panther disc so I don't want to delete anything Mac OS X-related. I know that I should probably delete Mac OS 9 to save HD space. But can I just install 10.0 on the same partition and select it from Startup Disk? TIA!!

Fetch1998​

 

Thank you for the reply!