slope = m
"rise" is the number of units you go up(+) or down(-) from each point (y-axis)
"run" is the number of units you go to the right from each point (x-axis)
Lines usually go from left to right, so the point furthest to the left will be the starting point, which is (1, -6). To get from point (1, -6) to (3, 2), you go up 8 units and to the right 2 units, so the slope is which simplifies to 4
Slope formula:
Plug in the two points to find the slope
(1, -6) = (x₁, y₁)
(3, 2) = (x₂, y₂)
(two negative signs cancel each other out and become positive)
m = 4