This site is not suitable for graphs.
line graph
the name of any graph always starts off with the y axis vs the x axis in this case, a suitable title would be: "The Rate of Digestion vs the pH range of ____"
The system in which you draw it, with suitable numbers on the x-, and y-axle. And the line that your function makes.
Pie Graph.
Graph plotter
a wide paper pen plotter
Graph plotter
There is no 'best' plotter. It is the one most appropriate and within your budget.
You should only pick a particular type of graph if it is the most suitable for illustrating what you wish to illustrate. Sometimes a bar graph may be best, at other times it may be the worst.
The person creating the graph can choose any suitable unit.
A line graph would be the most suitable.
For up to seven attributes, you can use either a pie chart of a bar graph. For more attributes, a pie chart is not suitable.
It is not a suitable form of graph. A circle graph can be used for showing the relationship between a variable and its component parts. It is not suitable for illustrating changes with height.
A plotter is a graphics printer that uses a pen or pencil to draw images. A plotter cutter is a plotter in which the plotting pen has been replaced with a knife or a sharp blade.
bar graph
Because a bar graph and pictographs are more visual and labelled than any other type of graph.