Question

What is the amplitude, period, and phase shift of f(x) = −3 cos(4x + π) + 6?

Answer 1

Y = Asin(Bx-C)+D
A = amplitude
2pi/B = period
C/B = phase shift

Answer 2

I've tried solving and i keep getting confused

Answer 3

amplitude = 3; period = pi over two; phase shift: x = negative pi over four

amplitude = −3; period = pi over two; phase shift: x = pi over four

amplitude = −3; period = negative pi over two; phase shift: x = negative pi over four

amplitude = 3; period = 2π; phase shift: x = negative pi over four
these are my options

Answer 4

what did you get when you solved it?

Answer 5

i think its either a or d?

Answer 6

I'm thinking a

Answer 7

hello?

Answer 8

Remember the amp is A the full A including the sign

Answer 9

so I'm wrong?

Answer 10

yeah

Answer 11

so b ?

Answer 12

lets work it one by one
A = |-3| = 3
period = 2pi/4 = pi/2
phase shift = -pi/4

Answer 13

it looks like its a

Answer 14

so i was right.. not wrong. thnx

Answer 15

yes