Algebra-1

Function Definition: A function maps each element of a set (the domain) to exactly one element of another set (the co-domain). In terms of graphs, for every x-value, there should be at most one corresponding y-value.

Since there are instances where the same x-coordinate has multiple y-coordinates associated with it, the graphed relation does not satisfy the vertical line test. This means that the relation is not a function. Therefore, the correct answer is D.

A. "The graphed relation is not a line." This is true, but it doesn't directly relate to whether the relation is a function or not. Functions can be represent...