Answer
amplitude$=\frac{2}{3}$, period$=2$, phase shift$=\frac{6}{\pi}$.
See graph.
Work Step by Step
1. Given $y=-\frac{2}{3}cos(\pi x-6)$, we find the amplitude$=\frac{2}{3}$, period$=\frac{2\pi}{\pi}=2$, phase shift$=\frac{6}{\pi}$.
2. See graph.
