Find the slope between these points:
(-1, 9) and (2, 3)
The slope between two points (x₁, y₁) and (x₂, y₂) is given by the formula:
slope = (y₂ - y₁) / (x₂ - x₁)
Using the given points (-1, 9) and (2, 3):
(x₁, y₁) = (-1, 9)
(x₂, y₂) = (2, 3)
Plugging these values into the formula:
slope = (3 - 9) / (2 - (-1))
= (-6) / (2 + 1)
= -6 / 3
= -2
Therefore, the slope between the points (-1, 9) and (2, 3) is -2.