WAEC - Mathematics (2017 - No. 18)
Calculate the gradient (slope) of the joining points (-1, 1) and (2, -2)
-1
\(\frac{-1}{2}\)
\(\frac{1}{2}\)
1
คำอธิบาย
Gradient = m = \(\frac{y_2 - y_1}{x_2 - x_1}\)
= \(\frac{-2 -1}{2 + 1}\)
= \(\frac{-3}{3}\)
= -1