So remember in our discussion on the rate law we said that if the rate law looks like this, then our reaction is in fact a first order reaction where V is the rate of that particular reaction, k is the rate constant and this is a substitute concentration. And this coefficient, this exponent of one basically describes a first order reaction. And this looks like this or this looks like this where V is v naught, k is V max divided by Km and this quantity is equal to this. So what that basically means is at the beginning of that chemical reaction we see that the rate, the velocity of that enzymes activity is directly proportional to the substrate concentration. So that is what we mean by a first order reaction. So notice that this is a straight line and also a first order reaction.