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

Question

(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.

Answer 1

The mapping diagram that represents a relation that is not a function is the fourth one. This is because there is a single input value (6) that is assigned to multiple output values (negative 3). In a function, each input value can only be assigned to one output value.