Problem Determine the rate order of a reaction

First calculate log (A) and log (Rat6(A)) - to do the latter we simply use the positive initial rates  

The gradient of the graph gives the rate order the intersect of the line with the y-axis shows the logarithm of the rate constant. Note - it is the logarithm of the rate eonstant and NOT the rate constant itself  

The big problem is that we do not get any units for k with this method (because we use log (k)). 

For that all we have to do is to pick two points from our data set and calculate the gradient. 

With these data we can now calculate our rate order by using the general equation for a gradient  

---