Emac Memory Upgrade Leopard OS X 10.5 For EMac?

Leopard OS X 10.5 for eMac? - emac memory upgrade

Hello, I have an Apple iMac 1.00GHz Power PC G4 with 640 MB RAM and 100 GB of memory. I wonder if you can install Mac OS X 10.5 Leopard on the iMac and run the OS X 10.5.6 update?

Thank you!