Here is the graph of the equation $y = \sqrt{x - 3}$. As shown, the graph starts at $x = 3$, because the square root function requires $x - 3 \geq 0$, which means $x \geq 3$.

Would you like further details or have any questions?

Here are some related questions to explore:

1. How does the graph change if we shift the equation by adding constants?
2. What happens to the graph if we change the square root to a different root, like cube root?
3. Can you express the domain and range of this function explicitly?
4. How would you graph $y = \sqrt{2x - 6}$?
5. What is the derivative of $y = \sqrt{x - 3}$ and how does it describe the slope of the graph?

Tip: Always consider the domain of a square root function when graphing, as it determines where the function is defined!