Question 43

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waecmaths question: 

The relation $y={{x}^{2}}+2x+k$passes through (2,0). Find the value of k 

Option A: 

–8

Option B: 

–4

Option C: 

4

Option D: 

8

waecmaths solution: 

$\begin{align}  & y={{x}^{2}}+2x+k \\ & \text{When it pass through the point (2,0)} \\ & 0={{2}^{2}}+2(2)+k \\ & k=-8 \\\end{align}$

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