Answer: 1. 1/50, or 1 megabyte per 50 seconds 2. -5/2, or -5 dollars per 2 months
Explanation: To find slope, we can use the slope formula: m = (y2 - y1)/(x2 - x1)
M represents the slope, (x1, y1) represent the coordinates of a point on the line, and (x2, y2) represent the coordinates of another point on the line. The points you pick don’t matter as long as they’re different.
For the first graph, I’ll pick (150, 3) and (100, 2). m = (2 - 3)/(100 - 150) m = -1/-50 m = 1/50
From the x and y axis, I can determine the units: megabytes per seconds. The answer becomes 1 megabyte per 50 seconds.
The second graph will have the same process. Since the line is pointing downward, I already know that the slope will be negative. I can plug the pre-chosen points, (10, 5) and (4, 20), into the slope formula. m = (20 - 5)/(4 - 10) m = 15/-6 or -5/2
