Please help me with this

Question

Find the amplitude and midline of y=2-4cos t.

Midline: y=

Amplitude:

Answer 1

midline is y=2

amplitude = 4

y=Acosx + D is a general form equation where D = midline (or vertical shift) and A = the amplitude

Answer 2

The amplitude is 4. the whole graph is moved up two units and then the graph swings down and up four units and the wave moves left or right.

If you need more help look me up as a tutor. Dennis

Answer 3

Midline y=2

Amplitude = 4