Final answer:
To find the slope between two points, use the formula m = (y2 - y1) / (x2 - x1). For the points (3, 8) and (7, -7), the slope is -15/4. For the points (-6, 7) and (-7, 5), the slope is 2.
Step-by-step explanation:
To find the slope of a line using the coordinates of two points, we can use the formula:
m = (y2 - y1) / (x2 - x1)
For the first set of points (3, 8) and (7, -7), the slope is:
m = (-7 - 8) / (7 - 3) = -15 / 4
For the second set of points (-6, 7) and (-7, 5), the slope is:
m = (5 - 7) / (-7 - (-6)) = -2 / -1 = 2