SFR_norm as a function of the ratio of the star-formation luminosity (L_SF) to the AGN luminosity (L_AGN). SFR_norm is defined as the ratio of the SFR of the AGN to the SFR calculated using the Elbaz et al. (2007) expression for SDSS galaxies. The gray shaded area indicates an area of ±0.3 dex around log SFR_norm = 0 to denote the main sequence. Below the gray area, the star formation of the AGN host galaxies is quenched. The dashed vertical lines indicates the $log\frac{L_{\mathrm{SF}}}{L_{\mathrm{AGN}}}=0$. At $log\frac{L_{\mathrm{SF}}}{L_{\mathrm{AGN}}}<0,$ the AGN activity is the dominant mechanism in the host galaxy, whereas at $log\frac{L_{\mathrm{SF}}}{L_{\mathrm{AGN}}}>0$ the AGN activity is low.