Algebra-1

Question Analysis
This question tests the application of the Vertical Line Test to determine if a graph represents a function. The key concept is that a function must pass the Vertical Line Test.

Key Concept Explanation
The Vertical Line Test states that if any vertical line intersects a graph at more than one point, then the graph does not represent a function. This is because a function must have a unique output for each input.

Step-by-step Solution
1. Recall the Vertical Line Test: a vertical line should interse...