Algebra-2

To determine which graph does not represent a function, we can use the vertical line test to check each graph to see if any input (x-value) maps to more than one output (y-value).

 

Graph A

Each input 7, -5, -2, 2, 5 and 7 maps to exactly one output.

This graph represents a function because no input is repeated with different outputs.

 

Graph B

When x=2, there are two corresponding y-values: -2 and 4. This violates the vertical line test.

This graph does not represent a function because the...