At the beginning of 2000 Ken's house was worth 232 thousand dollars and Devin's house was worth 110 thousand dollars. At the beginning of 2003, Ken's house was worth 176 thousand dollars and Devin's house was worth 156 thousand dollars. Assume that the values of both houses vary at an exponential rate.

The last graph.

Step-by-step explanation:

The first thing we look for is the y-intercept at -2.  The only graphs where the line passes through the y-intercept at this point are the first and the last.

The slope of the line we want is -2/3.  This means the line decreases; the first graph increases, not decreases, so it must be the fourth one..

Checking the fourth graph, from the y-intercept, we go down 2 and over 3 to find the next point; this means the slope is -2/3 and this is the correct line.