Relation between M_UV and β for the sample of EELGs with PRISM spectra (red squares). The black dashed line is the relation from Dottorini et al. (2025). The dashed green line represents the predictions from SAMs at z = 5 (Yung et al. 2019). The red line traces the median values of β as a function of M_UV, computed in bins of M_UV. The shaded region corresponds to the 1σ observed scatter in the sample. Green and orange symbols are as in Fig. 3.