Algebra-1

Question Analysis
This question assesses the student's ability to apply the Vertical Line Test correctly. The key is to understand that if a vertical line intersects the graph at most once, the graph represents 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. Apply the test: A vertica...