According to economists, this episode of great recession was resulted from a sudden busting of house bubble in US, where the house bubble was caused by rapid growth of improper regulation on sub-prime mortgages (Merriam 2009; Wang 2009; Whitney 2007).
When working with equations that have two variables, the coordinate plane is an important tool. It's a way to draw pictures of equations that makes them easier to understand. To create a coordinate plane, start with a sheet of graph or grid paper. Next, draw a horizontal line.
Suppose you have two columns of data in Excel and you want to insert a scatter plot to examine the relationship between the two variables. Begin by selecting the data in the two columns. Then, click on the Insert tab on the Ribbon and locate the Charts section.