Algebra-1

Question Analysis
This question evaluates the student's understanding of the Vertical Line Test. The key is to recognize that if a vertical line intersects the graph at two points, the graph fails the test and does not represent a function.

Key Concept Explanation
The Vertical Line Test is a graphical method used to determine whether a given graph represents a function. A graph represents a function if every vertical line intersects the graph at most once.

Step-by-step Solution
1. Identify the condition for a graph to be a function: a vertical line must intersect the graph at most once.
2. ...