A trend line is what provides an approximation of the relationship between the variables.
A trend line is usually drawn to show the direction that a variable is going towards. They provide us with a pictorial representation of supports and resistances that are observed.
A trendline helps to show a pattern that is observed. It tells us the pattern or the behavior of a given data set when the graph has been plotted
Read more on https://brainly.com/question/20309607?referrer=searchResults
