1. INTRODUCTION  
2. SURVEY DESCRIPTION AND DATA  
2.1. FIGS Observations and Spectral Extraction  
2.2. Optical Data  
3.1. Line Identification  
3.2. Flux Measurement  
3.3. Line Comparisons in FIGS and MUSE  
4. METALLICITY MEASUREMENTS  
5. RESULTS AND DISCUSSION  
5.1. Mass-Metallicity Relation  
5.2. Comparison with Other MZ Relations  
5.3. Redshift Sample  
5.4. SFR and the Fundamental Metallicity Relation  
6. CONCLUSIONS