A line graph, probably.
A graph would not be useful to illustrate the times between eclipses, or the comparative shapes of airfoils. Graphs only illustrate numerical information in comparison with other similar values.
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A diagram that exhibits a relationship, often functional, between two sets of numbers as a set of points having coordinates determined by the relationship. Also called plot.A pictorial device, such as a pie chart or bar graph, used to illustrate quantitative relationships. Also called chart., graphed, graph·ing, graphs.To represent by a graph.To plot (a function) on a graph.
That depends on the data you're trying to graph. Generally, circle graphs / pie charts / whatever you want to call them are good because they show pieces of data in proportion to the sum of all the data; that is, they illustrate the relative size of the pieces of data when compared to each other and compared to the whole.
A sine-wave graph
A line graph, probably.
it always rises from left to right
Make a table, or a pie graph, or a bar graph. 'Nuff said.
which is true about the functional relationship shown in the graph
A graph would not be useful to illustrate the times between eclipses, or the comparative shapes of airfoils. Graphs only illustrate numerical information in comparison with other similar values.
Graph
It is called a 'pie chart'
The first graph is clear. But the second graph shows demand's relation to price and supply. Now let's say supply decreases; then p will rise (q = constant, p = >). If demand decreases, then p will decrease as well. When both curves decrease, you will face different situations. How much have they decreased is the main question. Has demand decreased more or less than supply? Let's assume this. So then price will decrease as well (compared to Poriginal).
You cannot. A circle graph cannot be used to illustrate relationships between two variables.
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.
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