I really really need help!!!!!!

Question

asked Mar 21, 2020 227k views

1 Answer

MyGGaN · Answer 1 · 2020-03-26T23:15:20+0000

ANSWER

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

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.