Which description is represented by a discrete graph?

Step 1: Define the Problem

Identify what a discrete graph is and determine which description fits this type of graph.

Step 2: Break Down the Problem

1. Understand the characteristics of a discrete graph.
2. Analyze possible descriptions that could represent a discrete graph.

Step 3: Apply Relevant Concepts

• A discrete graph consists of distinct, separate points. It is often used to represent situations where data is counted in whole numbers and not continuous.

Step 4: Analysis, Verify and Summarize

• Discrete graphs are typically used for scenarios like counting people, items, or events where fractional values do not make sense.
• Verify which description involves distinct, separate values or counts.

Final Answer

A description that involves counting distinct items or events, such as "the number of students in different classes" or "the number of cars sold each day," is represented by a discrete graph.