Question

which diagram does not show a function?

Explanation:

Step1: Recall function definition

A function maps each input to exactly one output.

Step2: Check each diagram

• Top-left: Each input has 1 output.
• Top-right: Each input has 1 output.
• Bottom-left: Input 1 maps to -10 and -7 (two outputs).
• Bottom-right: Each input has 1 output.

Answer:

The bottom-left diagram (Input 1 points to both -10 and -7) does not show a function.