Question

How do you graph `y=cos2x+4`?

Answer 1

See below.

Explanation:

Assuming there are no omitted parentheses in the question, this ia

`y = cos(2x)+4`

Replacing argument `x` with `bx` changes the period from `2pi` to `2pi/b`, in this case the period will be `pi`

Adding a constant `d` after the cosine moved the graph up (for positive `d`) or down (for negative `d`). In this case we shift the graph up `4`.

graph{cos(2x)+4 [-6.45, 6.034, 0.9, 7.144]}