Tea Tree Oil is used commercially in many products including shampoos, body lotions and toiletries, but there is no legislation requiring manufacturers to state the concentration of tea tree oil in these products.
Line Graphs. One of the most common graphs you will encounter is a line graph. Line graphs simply use a line to connect the data points that you plot. They are most useful for showing trends, and for identifying whether two variables relate to (or correlate with) one another.
A graph is a useful tool in mathematics. It is a visual representation showing different correlations between variables or parameters of a given function. In a direct relationship graph, the value on the y-axis varies at the same rate and direction as the values on the x-axis. The opposite of a direct relation graph is an inverse relationship graph. Learn more about Data Graphs