Explanation
Given that the equation is given as
[tex]H(w)=constant\times w[/tex]
The point (10,20) represents the input value w (10) and the output H(w) that is 20. Therefore;
[tex]\begin{gathered} 20=constant\times10 \\ constant=\frac{20}{10} \\ constant=2 \end{gathered}[/tex]
Answer: Option A
