3-3- Rate of Change and Slope

Watch the video before doing the worksheet. 3.3-Rate of Change Video 4 -3 0 Find the slope of the line that passes through each pair of points. Question Answer (6, 3), (7, -4) -7 (-7, 8), (-7, 5) undefined (0.2, -0.9), (0.5, -0.9) 0 (6, -2), (5, -4) 2 (-2, -5), (7, 8) 13 (7 4 (-1 2 1 Find the value of r so the line that passes through the pair of points has the given slop. Question Answer (-2, r), (6, 7) m=1 3 (1,4), (r, 5) m=undefined 1 (-3, -4), (-5, r) m=-9 5 (r, 7), (11, 8) m=-1 16 Question Answer The pitch of a roof is the number of feet the roof rises for every 12 feet horizontally. If the roof has a pitch of 8, what is its slope expressed as a positive number? 2 Question Answer A daily newspaper had 12,125 subscribers when it began publication. Five years later it had 10,100 subscribers. What is the average yearly rate of change in the number of subscribers for a five-year period? -405 subscribers per year