Answer:
m = 4
Explanation:
You can find the slope of the line connecting two points with the slope formula, which is m = (y₁ - y₂)/(x₁ - x₂), where (x₁, y₁) is the coordinate of one point, and (x₂, y₂) is the coordinate of another.
Plug in: m = (20 - 12)/(4 - 2)
Subtract: m = 8/2
Simplify: m = 4