To list the available emulators run emulator -list-avds
C:\Users\terry\AppData\Local\Android\Sdk\tools>emulator -list-avds
Nexus_6_API_27
Pixel_2_API_28
Pixel_2_XL_API_28
To run the emulator run emulator -avd [name of emulator]
C:\Users\terry\AppData\Local\Android\Sdk\emulator>emulator -avd Pixel_2_API_28
HAX is working and emulator runs in fast virt mode.