Question

graph y=4cos(2x-π). be sure to label your axis. state the amplitude, period, phase shift and vertical shift

Answer 1

Your function is in the form : \(F(x) = Ay(Bt-C)\)

- amplitude : \(A\)
- period: \(\dfrac{2\pi}{|B|}\)
- phase shift : \(\dfrac{C}{B}\)
- vertical shift: none

Answer 2

http://www.purplemath.com/modules/grphtrig.htm :)