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.
The Graph of an Equation. We have used a coordinate system to represent graphically. the relationship between two quantities. There, the graphical picture consisted of a collection of. points in a coordinate plane. Frequently, a relationship between two quantities is. expressed as an equation in two variables.