graph, plot the graph you want, save it as a picture file and upload it to the forum
Collect your data. After you have it all in one place, you should have one independent variable and one dependent variable. Determine the range of your data and Label your graph and your axes. Plot your data. Draw a line of best fit. Think about what your graph means and concentration is the main aspect.
a note here. the application works on windows through a kind of windows emulator. the program is called "wine" and it allows you to run some programs that were designed for windows only. perhaps there is a program like that for Macs. you can look it up. it is worth it to download this application. graph is a nice program