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WAEC Mathematics 2020 Paper

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Question : 39

Total: 48

x	6.20	6.85	7.50
y	3.90	5.20	6.50

The points on a linear graph are as shown in the table. Find the gradient (slope) of the line.

2 $\frac{1}{2}$
2
1
$\frac{1}{2}$

Solution:

Gradient = $\frac{y_2 - y_1}{x_2 - x_1}$

= $\frac{5.20 - 3.90}{6.85 - 6.20}$

= $\frac{1.3}{0.5}$

= 2

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