Question

Which of the following functions illustrates a phase shift?

Answer 1

D

Explanation:

We can write a general form of the sine/cos/tan function as:

`y=ASin(bx+C)` where C is the phase shift. So looking at the function, we see which of them has a "number added or subtracted" with the argument of bx.

Clearly, it is the fourth option, so correct answer is D.