Question

I really really need help!!!!!!

Answer 1

`y = 5 \sin( (6)/(5) x - \pi)-4`

Step-by-step explanation

The given function is

`y = 5 \cos( (3)/(5) x - \pi) + 4`

The period of this function can be determined using the formula:

`T= (2\pi)/( |b| )`

.

The period is

`T= (2\pi)/( (3)/(5) ) = (10\pi)/(3)`

Half the period of this function is:

`( (10\pi)/(3) )/(2) = (5\pi)/(3)`

The function which has this period is

`y = 5 \sin( (6)/(5) x - \pi) -4`

The first choice is correct.