Question

These are 3 questions btw so i need 3 answers!

Answer 1

Answer:

y = - $\frac{7}{2}$ cos ( $\frac{1}{2}$ x ) , y = cos ( 3x ) + 2

Step-by-step explanation:

Image 1.

The graph is reflection of cosine over x-axis and max is 3.5 ⇒ A = - $\frac{7}{2}$

Period is ( 4 π ) ⇒ B = $\frac{1}{2}$

There are no horizontal and vertical shifts ⇒ C = D = 0

y = - $\frac{7}{2}$ cos ( $\frac{1}{2}$ x )

Image 3.

The graph of cosine shifted 2 units up only ⇒ D = 2 , C = 0

Period of the given function is $\frac{2\pi }{3}$ ⇒ B = 3

y = cos ( 3x ) + 2