1. The problem is to find the value of $m$ given two graphs with lines and points. 2. From the description, the first graph shows a diagonal line passing through a point near the lower-left and crossing near the center. 3. The second graph shows a horizontal line across the upper half of the coordinate grid. 4. Typically, the slope $m$ of a line is calculated as $m = \frac{\Delta y}{\Delta x}$, the change in $y$ over the change in $x$. 5. For the diagonal line in Graph 1, since it rises from bottom-left to top-right, the slope $m$ is positive. 6. For the horizontal line in Graph 2, the slope $m$ is $0$ because there is no change in $y$ as $x$ changes. 7. Therefore, the value of $m$ for the horizontal line is $0$. Final answer: $m = 0$