Using the concept of function, it is found that diagram C does not represent a function.
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- In a function, each value of the input can be related to a single value of the output.
- In the diagram, from each value in the input, only one line can be exiting.
- If we look at diagrams A, B and D, each value of the input has only one respective value on the output, and thus, these diagrams are functions.
- At diagram C, the input 7 is mapped to outputs 8 and 12, that is, a single input mapped to 2 outputs, so it is not a function.
A similar problem is given at https://brainly.com/question/13136492
