Question

answer
function not a function
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Explanation:

Step1: Apply Vertical Line Test

A vertical line test checks if any vertical line intersects the graph more than once. For a graph to represent a function, each \( x \)-value must correspond to exactly one \( y \)-value.

Step2: Analyze the Graph

Looking at the given parabola - shaped graph, any vertical line drawn will intersect the graph at most once. This satisfies the definition of a function (each input \( x \) has a unique output \( y \)).

Answer:

Function