What is the maximum number of points in which a vertical line can meet the graph of real valued function?

Explanation

To determine the maximum number of points at which a vertical line can meet the graph of a real-valued function, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Definition of a Function**:
A real-valued function is a relation that assigns exactly one output (y-value) for each input (x-value). This means that for every x in the domain of the function, there is a unique y.

2. **Introducing the Vertical Line Test**:
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