Question 8

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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