Answer:
Yes, this is a function.
Explanation:
The tricky thing with this equation is that there is no domain (x value)given in this equation, but that doesn't mean it's not a function.
When an x value isn't present in an equation for a function it means that the y value is always the same. In this equation, y=5, Y ALWAYS Equals FIVE. Therefore, the only value changing is the x value.
So, (-1, 5) (0,5) (1,5) (2,5) (3,5), etc. are all examples of possible answers/points on a graph.