Sorry for the late answer!
Coram is right though.
To understand better, let's compare the notes of A minor pentatonic and C Major pentatonic:
A minor pentatonic:
A-C-D-E-G
C Major pentatonic:
C-D-E-G-A
You can see that both of these pentatonics share the same notes. The only difference is the root. A minor pentatonic is the relative minor to C Major pentatonic.
Playing these notes without a steady bass in the back, or a chord won't really illustrate this. But if you play these 5 notes with an A on bass, all the notes that you will play will be measured according to that bass. With an A on bass, the scale will sound like a minor pentatonic.
On the other hand, if we change the bass to C, the same notes will have a different feel since measured to that new bass. Playing a C on bass while playing that scale will sound like a C Major pentatonic.
That is because if you play for example G over an A bass note, that G will be a minor 7th. If you play that same G over a C bass note, that G will become a 5th.
To resume, each note played by itself doesn't mean anything. A note becomes meaningful when it can be compared to another one. In this case, the root.
I hope this makes sense!
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