Question

What are the amplitude, period, phase shift, and midline of f(x) = 7 cos(2x + π) − 3?

Amplitude = −3; period: π; phase shift: x = negative pi over 2; midline: y = 3

Amplitude: 7; period: π; phase shift: x = negative pi over 2; midline: y = −3

Amplitude: 7; period: 2π; phase shift: x = pi over 2; midline: y = 3

Amplitude: −3; period: 2π; phase shift: x = pi over 2; midline: y = −3

Answer 1

Hello!

Answer 2

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Answer 3

Amplitude: 7; period: π; phase shift: x = negative pi over 2; midline: y = −3