Reflection across x - axis means multiply by -1
- sin
period = pi
-sin ( 2x)
Amplitude 2
-2 sin(2x)
Midline y = -2 (usually it would be 0 .... shift it down 2)
-2 sin(2x) - 2
y-intercept -2 does not change anything on this sine function....
Picture here:
https://www.desmos.com/calculator/f1rhbw8zey