The graph represents a correspondence between x and y Determ

The graph represents a correspondence between x and y. Determine whether the correspondence is a function. Give its domain and range (write both in interval notation).

Solution

If you can draw a vertical line anywhere on a graph so that it hits the graph in more
than one spot, then the graph is NOT a function.

The correspondence is not a function as vertical line cuts the graph at more than one point.

Domain : ( - inf , -1)

Range ( - inf , inf)