Question

What is the equation of the graph below?

Answer 1

Answer:

Step-by-step explanation:

y=cos(x+π)

Answer 2

Answer:

$y=cos(x + \pi)$

Step-by-step explanation:

Remember that the cosine function has a period of 2π.

Now, the parental function is $y=cosx$, which has y-intercept at y = 1, and x-intercept at π/2.

Notice that the function showed in the graph attached has y-intercept at y = -1 and x-intercept at π/2. This indicates that the function has been moved leftwards π units.

Therefore, the function that belongs to this graph is

$y=cos(x + \pi)$