The formula to find slope is y₁ - y₂ / x₁ - x₂, where y₁, y₂, x₁, and x₂ are the x- and y-values, respectively, of two coordinates on a line.
The coordinates provided are (-1, 8) and (5, -4). Plug these values into the formula accordingly and simplify.
y₁ - y₂ / x₁ - x₂
8 - (-4) / -1 - 5
8 + 4 / -6
12 / -6
-2
Answer:
The slope of the line that contains the points (-1, 8) and (5, -4) is -2.
