Final answer:
To find the slope of a line through two points, use the formula: slope = (y2 - y1) / (x2 - x1). For the points (3, 1) and (5, 8), the slope is 3.5.
Step-by-step explanation:
To find the slope of a line through two points, we can use the formula:
slope = (y2 - y1) / (x2 - x1)
Using the example points (3, 1) and (5, 8), we can substitute the values into the formula:
slope = (8 - 1) / (5 - 3) = 7 / 2 = 3.5