Determine which of the mapping diagrams represents a relation that is not a function.

(1 point)
Responses

A mapping diagram with negative 2 pointing to negative 3 and 5; negative 1 pointing to 8; 6 pointing to 9.
Image with alt text: A mapping diagram with negative 2 pointing to negative 3 and 5; negative 1 pointing to 8; 6 pointing to 9.

A mapping diagram with negative 6 pointing to negative 3; 5 pointing to negative 3; 6 pointing to negative 1; 8 pointing to 6.
Image with alt text: A mapping diagram with negative 6 pointing to negative 3; 5 pointing to negative 3; 6 pointing to negative 1; 8 pointing to 6.

A mapping diagram with negative 4 pointing to negative 9; 3 pointing to negative 5; 5 pointing to negative 1; 8 pointing to 7.
Image with alt text: A mapping diagram with negative 4 pointing to negative 9; 3 pointing to negative 5; 5 pointing to negative 1; 8 pointing to 7.

A mapping diagram with negative 6 pointing to negative 3; 5 pointing to negative 3; 6 pointing to negative 3; 8 pointing to negative 3.
Image with alt text: A mapping diagram with negative 6 pointing to negative 3; 5 pointing to negative 3; 6 pointing to negative 3; 8 pointing to negative 3.
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The mapping diagram that represents a relation that is not a function is the third option: A mapping diagram with negative 4 pointing to negative 9; 3 pointing to negative 5; 5 pointing to negative 1; 8 pointing to 7.