Hi Bob,
would this work for you?
Plot[{y/324, y/275, y/221}, {y, 200, 1000}, PlotLegends -> {"Oil", "Propane", "Gas"}, Frame -> True, FrameLabel -> {"x-Axis", "y-Axis"},
LabelStyle -> Directive[Bold, 15],RotateLabel-> False]
Actually the RotateLabel function should not be necessary, but the labelling of the y-axis overlapped with the figure without it. I suppose that's a minor glitch in the Cloud.
Cheers,
Marco
Marco