This Y value here multiplied by this ratio, the substrate concentration, the X value divided by Km, the Mikaela's constant. Plus, once again, the X value, the substrate concentration. Now, what we want to explore in this lecture is the meaning behind this equation. What physiological meaning does this equation actually have and does this equation correctly describe this blue curve? So this is what we basically want to answer in this question. Now what we want to explore first is the meaning behind the Km terms.