Amplitude is the one half of the difference between the maximum and minimum values of y.
From the graph, the maximum value is 6 and minimum value is -6.
Find the amplitude.
[tex]\begin{gathered} \text{Amplitude}=\frac{1}{2}(6-(-6)) \\ =\frac{1}{2}\cdot12 \\ =6 \end{gathered}[/tex]
