NECO 2024 · Paper 1 · Q26

Calculate the gradient of the line joining $(-2, -5)$ and $(4, 8)$ , correct to 1 decimal place.

Worked solution (try it first)

Gradient is the change in $y$ over the change in $x$ : $\dfrac{8 - (-5)}{4 - (-2)} = \frac{13}{6}$ .
$13 \div 6 = 2.1666\ldots$
The second decimal is 6, so round up: 2.2, option D.