To graph the function \( y = \sqrt{x - 3} + 1 \), we will start by identifying its domain and range, as these will help us locate the endpoint(s).
Step 1: Find the domain
The expression inside the square root \( \sqrt{x - 3} \) must be non-negative:
\[ x - 3 \geq 0 \]
This gives us:
\[ x \geq 3 \]
So, the domain of the function is \( [3, \infty) \).
Step 2: Find the range
Since the square root function outputs non-negative values, the smallest value occurs when \( x = 3 \):
\[ y = \sqrt{3 - 3} + 1 = 0 + 1 = 1 \]
As \( x \) increases, \( \sqrt{x - 3} \) also increases, and thus \( y \) will also increase without bound. Therefore, the range is \( [1, \infty) \).
Step 3: Determine the endpoint
The endpoint of the graph occurs at the lower limit of the domain:
\[ (3, 1) \]
Conclusion:
The endpoint of the function \( y = \sqrt{x - 3} + 1 \) is:
\[ \boxed{(3, 1)} \]