Just ABC Research, please correct me if wrong.
We found the rate of change of a given function by finding its derivative.
Y = 6X+3
dy/dx = 6
Example
For this example, The data of Sales and Net Profit is get from financial statement on web.
From the graph plot, we can see that the equation for
Nestle Y = 0.1782X-145477
Hence, can say that RM1 change of Nestle sales generate 0.1782 of net profit.
From the graph plot, we can see that the equation for
Spritzer Y = 0.2842X-22015
Hence, can say that RM1 change of Spritzer sales generate RM0.2842 of net profit.
