You light a candle and record its height in cm every minute. You observe the following data.
Plot the points and use a ruler to draw the media fit line. What is the slope of that line? What does this represent in terms of the candle?
point 1 (2.2, 14)
point 2 (6.7, 11.5)
represents the fact that the candle gets 5cm shorter every 9 minutes