MZR for the MAGMA sample as described in the text. The locus of the host galaxy for GRB 050709 is also shown as a solid red square; the MZRs for MAGMA are shown as a solid curve (MAGMA median) and a dashed black curve (the best quadratic fit). Also shown is the MZR from Curti et al. (2020). The GRB 050709 host falls clearly within the range of normal star-forming galaxies and, compared with MAGMA, is rather metal-enriched.