Question 19

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waecmaths question: 

The table below satisfies the relation $y=k\sqrt{x}$ , where k is a positive constant. Use it to answer  18 and 19

x

1

4

p

y

0.5

1

2.5

Find the value of p

 

Option A: 

Option B: 

4

Option C: 

10

Option D: 

25

waecmaths solution: 

$\begin{align}  & 25=0.5\sqrt{x} \\ & \sqrt{x}=\frac{2.5}{0.5} \\ & \sqrt{x}=5 \\ & x=25 \\\end{align}$

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