Upgrade MacBook Air from OS X El Capitan to Mojave

Question

My mac specifications are on the photo above .. I'm afraid about upgrading my mac from El Capitan to Mojave and I'm asking :

1. am I going to lose my installed software?
2. am I going to lose my data ?
3. Will Mojave works in my machine as well as El Capitan or the system will become slow ?

Answer 1

1. No
2. No
3. It's difficult to say with certainty, but if your system meets the specs listed on Apple's upgrade page then it will most likely perform as well as it does on El Capitan.

Make sure that you've done a full time machine backup of your system before doing the upgrade.