Based on the description of the line you've provided, it is rising from the lower left (quadrant 3) to the upper right (quadrant 1). A line that rises as you move from left to right has a positive slope.
To identify the slope mathematically, you would typically use two points on the line to calculate it using the formula:
\[ \text{slope (m)} = \frac{y_2 - y_1}{x_2 - x_1} \]
However, without specific coordinates or points from the image, I can only confirm that the slope is positive since the line is sloping upward from left to right.
If you need further assistance or more specific information, please provide additional details or coordinates from the image.