Jambmaths question:
If y varies directly as x, find the constant of variation when y = 12 and x = 4
Option A:
8
Option B:
6
Option C:
5
Option D:
3
Jamb Maths Solution:
$\begin{align} & y\propto x \\ & y=kx \\ & k=\frac{y}{x}=\frac{12}{4}=3 \\\end{align}$
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