Answer:
3
Step-by-step explanation:
Remember that slope = rise over run, or change in y / change in x. Coordinates are in the form (x, y).
So with the points (1, 2) and (3, 8):
[tex]\frac{y2-y1}{x2-x1} = \frac{8-2}{3-1} = \frac{6}{2}[/tex] = 3
The slope is 3.