Interpretation of graphs
A total of seven enzyme activities have been assayed using your subcellular fractions, and the amount of protein in the fraction quantitated.  The results are presented graphically.

The X axis is the relative unit of protein from 0 to 100 units.
The Y axis is the relative specific activity (percentage of total enzyme activity/percentage of total protein) of each fraction, from 0 to 9 units.

P1 fraction is shown as N
P2 fraction is shown as M
P3 fraction is shown as L
P4 fraction is shown as P
S fraction is shown as S.