Answer
See graph and explanations.
Work Step by Step
Step 1. We need to calculate the slope value for each line segment. The good thing is that all the line segments have a horizontal distance of $1$ year.
Step 2. Read the vertical values and find the slope: for 2005-2006, $m_1=5.4-6.4=-1$,
Step 3. Repeat the process for other line segments to get: $m_2=0.2$ for 2006-2007, $m_3=-4.5$ for 2007-2008, $m_4=0.5$ for 2008-2009, $m_5=1.9$ for 2009-2010, and $m_2=-0.2$ for 2010-2011.
Step 4. Graph the above results as shown in the figure (re-scale the x-axis with x'=x-2000 and start with x'=5).
