MacBook Pro Continuity

I believe that you need a Macbook Pro from 2012 or newer. http://help.apple.com/machelp/mac/10.11/#/mchl1d734309

For certain features yes, for others no.

Handoff requires a 2012 or newer Macbook. But Cellular Calls only requires your MacBook be running Yosemite or later.

Use Continuity to connect your iPhone, iPad, iPod touch, and Mac - Apple Support

System requirements for Continuity on iPhone, iPad, iPod touch, and Mac - Apple Support