Answer
Slope = $\frac{-1}{2}$
Work Step by Step
To find the slope between two points, we use the slope formula. The slope formula is the change in the y values over the change in the x values.
Slope = $\frac{y_{final} - y_{initial}}{x_{final} - x_{initial}}$
The final and initial points do not matter. In this example, the initial point will be (2,-1) and the final point will be (-2,1). However, either point can be considered the final point and either point can be considered to be the initial point without changing the slope.
Using the slope formula:
Slope = $\frac{1 - (-1)}{-2 - 2}$ = $\frac{2}{-4}$ = $\frac{-1}{2}$
