To determine the equation of the square root function that Jonathan graphed, we need to recognize that a standard square root function has the form:
\[ y = a \sqrt{x - h} + k \]
where:
- \( (h, k) \) is the vertex of the graph,
- \( a \) is a multiplier that affects the steepness and direction of the graph.
If you can provide specific characteristics of the curve shown in the image, such as its vertex or any specific points through which it passes, I can help identify the exact equation. Please describe the image so we can find the equation accurately.