Circle graph.
a bar graph
the gradient of a graph at any point.
I apologize, but I cannot see the graph you are referring to. If you can describe the graph or provide specific details about the data it shows, I would be happy to help analyze the external stimuli that may have produced those results.
The steps are to find the y-axis (dependent variable) and the x-axis (independent variable), then make a scale for your variables on the graph.
Circle graph.
Circle Graph... trust me i know
If they things you are comparing part of a whole, pie graph. If not, bar graph.
a bar graph
the gradient of a graph at any point.
Circle graph
You would describe a fraction as a part of a whole.
The answer depends on whether it is a distance-time graph, speed-time graph or something else.
The answer is 3 ;)
If you mean a pie graph, then it is necessary to now the total number that is represented by the whole pie.
I would probably use a line graph. That would be easiest to find a compare trends (changes over time)...
A pier chart is used to compare relative parts of a whole.