Calculate the gradient (slope) of the joining points (-1, 1) and (2, -2)
-
-1
- \(\frac{-1}{2}\)
- \(\frac{1}{2}\)
- 1
The correct answer is: A
Explanation
Gradient = m = \(\frac{y_2 - y_1}{x_2 - x_1}\)
= \(\frac{-2 -1}{2 + 1}\)
= \(\frac{-3}{3}\)
= -1