It is not a function, according to the graph.
The graph below depicts the price of a stock over time. The red line indicates when the stock was purchased, and the blue lines indicate how much money was spent each day. The green line is the yield (annual percentage return).
The Graph is not a function
We are shown a graph exhibiting a relationship.
It is necessary to ascertain whether or not the graph reflects a function.
The presented graph represents a function if a vertical line crosses it at least once, else it does not.Therefore, if we plot the vertical line "X=3" in the picture, we can see that the line intersects the graph at two places, A and B, as shown below.
Hence, the correct answer is option (c) It is not a function.
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