Algebra-1

Question Analysis
This question tests the student's ability to determine whether a given relationship is a function by using the Vertical Line Test. The key concept is that a function must have a unique output for each input.

Key Concept Explanation
A function is a special type of relationship where each input (independent variable) has a unique output (dependent variable). The Vertical Line Test is a method to determine if a graph represents a function. If any vertical line intersects the graph at more than one point, the graph does not represent a function.

Step-by-step Solution
1. Examine the graph provided.
2. Draw several vertical lines across the graph.
3. Observe if any vertical line intersects the graph at more than one point.
4. If a vertical line intersects the graph at more than one po...