Can you use the apple pencil(1st generation) with the iPad air 2?

No Apple Pencils work with ANY iPads made before late 2015 and this includes the 2014 iPad Air 2.

Sorry, no. There is no version of the Apple Pencil compatible with that model.

See the info below for compatible models.

Apple Pencil - Select - Apple

Your Apple Pencil will only work with iPad Air.

As what i know you can not