By looking at the graph, we can see that the minimum is y = -6.
How to find the minimum value of a function?
The minimum of a function is the smallest value that f(x) takes, to see it, we need to find the lowest value of f(x) in the graph.
In this case, the minimum would be the value that the function takes in the troughs, which we can see is equal to -6.
Then we can conclude that the minimum of the function is y = -6
If you want to learn more about functions, you can read:
https://brainly.com/question/13136492
