A student carried out an investigation into how substrate concentration affects the rate of an enzyme-catalysed reaction. A graph was drawn to display the link between these two variables. The student was told to read values from the graph that could then be used to find the Michaelis-Menten constant, $K_m$, for this enzyme. J, K, L and M mark points taken from the graphs that the student could use to find the value of $K_m$. Which two readings does the student need to use to determine the value of $K_m$?
- AJ and K
- BJ and M
- CK and L
- DL and M