To determine if a relation is a function, the vertical line test is a common method. According to this test, if a vertical line intersects the graph of the relation at more than one point, then the relation is not a function.
Since I cannot graph the relation directly without a specific equation or set of points provided, I can guide you through the process:
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Graph the Relation: Plot the points or graph the equation provided. Make sure to include all relevant points or the shape dictated by the equation.
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Vertical Line Test: Imagine drawing vertical lines through the graph. If you find any vertical line that touches the graph at more than one point, then the relation fails the vertical line test and is not a function.
Based on this explanation, if you conduct the vertical line test and find that every vertical line touches the graph at most once, the relation is a function, and you would enter 1. If any vertical line touches the graph at more than one point, then it is not a function, and you would enter 2.
Please provide the specific relation (graph or equation) that you are examining, so I can help you determine whether it is a function or not.