Question

How do you graph `y=-2+cosx`?

Answer 1

By providing numbers to x, you can find value of the function and graph it.

Explanation:

If x is 0, your function will be `y=-2+1 = -1`

If x is `pi/4` your function will be `y=-2+0.707= -1.293`

etc. Now you can graph

graph{-2+(cosx) [-10.08, 9.92, -7.24, 2.76]}