Answer:
Yes, it is a function.
Domain= (-∞,∞)
Range= (-∞,∞)
Step-by-step explanation:
Because if we can draw any horizontal line that intersects a graph more than once, then the graph does not represent a function because that y value has more than one input.
However, the graph you posted, the horizontal line intersects the graph once, then the graph represents a function.
Hope this helped. Mark me brainiest please.
