Is 'To Feed' Separable or Inseparable? - Phrasal Verb Quiz

Quiz for Verb: 'To Feed'

Is the phrasal verb 'To Feed' separable or inseparable in the following examples?

'Feed off' - Eat a food as part of an animals diet

'Feed on' - Give someone a particular food

'Feed on' - Grow stronger

'Feed up' - Give someone a lot of food to restore their health, make them bigger, etc

'Feed on' - Consume in an animal's diet

'Feed off' - Use something to your advantage