Figure 2 shows the top 20 tourist generating countries to the US. The reader is asked to compare straight lines with curved ones. There is little relationship between the length of the line ...

Key points about graphs of inequalities Show values that satisfy an inequality on a set of axes by drawing the line of the corresponding equation and shading the area specified in a question.

An extreme type of straight-line wind is a derecho. The wind blows straight out and ahead of a storm. If you were here during the summer of 2012, you know exactly what I’m talking about.