BECE Mathematics 2025 Paper

Formula used:Gradient $m = \dfrac{y_2 - y_1}{x_2 - x_1}$ (change in $y$ divided by change in $x$).Given:$(x_1, y_1) = (2, 3)$, $(x_2, y_2) = (-4, 5)$Solution:Change in $y$: $y_2 - y_1 = 5 - 3 = 2$Change in $x$: $x_2 - x_1 = -4 - 2 = -6$$m = \dfrac{2}{-6} = -\dfrac{1}{3}$Key point: Putting the $x$ change on top gives $\dfrac{-6}{2} = -3$, which is the wrong way up. Keep the same point first in both the top and the bottom.Answer:Option B ($-\dfrac{1}{3}$)