Is my dog a greyhound/lab mix?

I can see Lab and Greyhound. The slender face and long legs, with the slimmer body, points to a greyhound or lurcher (a mix of dog with grey/deerhound in them) crossed with a Lab, in my opinion. Lurchers come in varying sizes so my guess would be a Lurcher X Lab, in which case there would still be greyhound in there :)