Question

The graph of y= cos x is transformed to the graph below. Which statementabout the graph is not correct?AMA3rtA. The amplitude is 3.B. There is no phase shift.C. The midline is y = 1.D. The period is r2rt

Answer 1

Step 1

Given;

Step 2

`Amplitude=\text{ }(maximum-minimum)/(2)\text{=}(3-(-1))/(2)\text{=}(4)/(2)=2`
`\begin{gathered} Midline=\frac{maximum\text{ + mimimum}}{2}=(3+(-1))/(2)=(2)/(2)=1 \\ y=1 \end{gathered}`

The period is;

`\pi`

Answer; Option A

`The\text{ amplitude is 3}`