This line graph illustrates the average monthly change in the prices of metals during 2014. There are three kinds of metals in the graph which are Copper, Nickel and Zinc.
This graph shows the monthly percentage changes In price of copper, nickel, and zinc. Speaking in general, the numbers are relatively high in the beginning of 2014, and all encounters a slight drop in the third quarters,
The line graph below illustrates the cost of food and oil over a period of eleven years.The average oil and food prices are shown per barrel and points respectively.
The line graph compares the world food and oil prices from 2000 to 2011 in which the food price was measured under points whereas the dollar was the unit of oil price.