## anonymous one year ago What is the amplitude, period, and phase shift of f(x) = -4 sin(2x + π) - 5?

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1. anonymous

2. anonymous

really?? @TheSmartOne you just leave me hangin like that?!

3. ybarrap

$$f(x)=A\sin(\cfrac{2\pi}{T}x+\phi)+b$$ A is the amplitude T is the period $$\phi$$ is the phase shift b is the y-intercept Match up each parameter with your function.

4. ybarrap

Note in this case b is the y-intercept, but if the phase was different, this would not be the case. "b" just represents an upward or downward shift of f(x) after you compute the sine part.