Question

Vertical Shift y= -1+3cos(x/4-pi)

Answer 1

\(\bf y= -1+3cos\left(\frac{x}{4}-\pi\right)\implies y= 3cos\left(\frac{x}{4}-\pi\right)-1\\ \quad \\
y = A ( Bx + C ) + D\\ \quad \\
D = \textit{vertical shift}\quad D > 0,\quad up, D < 0,\quad down\)

Answer 2

Thank you! :)

Answer 3

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