To reflect the triangle across the $x$-axis, you need to invert the $y$-coordinates of each of the triangle’s vertices, keeping the $x$-coordinates the same. Here’s the step-by-step process:

1. Identify the coordinates of each vertex of the triangle from the graph. For instance, if one vertex is at $(x, y)$, reflect it to $(x, -y)$.

2. Apply the reflection:

   • For each vertex $(x, y)$ of the triangle, the reflected point will be $(x, -y)$.

3. Plot the reflected points on the graph** below the x-axis in the same $x$-positions but opposite $y$-positions.

4. Connect the reflected vertices to form the reflected triangle.

Would you like a more detailed breakdown of each step or further assistance with identifying specific coordinates from the graph?

Here are some related questions to expand your understanding:

1. How do reflections across different axes affect the coordinates of shapes?
2. What changes occur when reflecting a shape across the $y$-axis instead of the $x$-axis?
3. How can you determine the line of symmetry for a given reflection?
4. How are reflections in the coordinate plane related to transformations in geometry?
5. What other types of transformations can be performed on shapes in the coordinate plane?

Tip: When reflecting across the $x$-axis, only the $y$-coordinate changes sign, making it a straightforward transformation.