precalc question

Question

For , 

its amplitude is ; 

its period is ; 

its phase shift is ; 

Answer 1

Hi Lina!

Here's some advice to help you answer this question.

Sine functions are of the form y=asin(bx+c)+d. That means that for your equation: a=1, b=3, and c=pi/4. The amplitude is |a|, the period is 2pi/b, and the phase shift is c. If c is positive, then the phase shift is to the left; if c is negative, then the phase shift is to the right.

Let me know if you need more help with this problem, I'm happy to help!