Slope is also known as rise over run -
Here, we have the slope
. This means that the rise is 
and the run is 
. Since both values are positive, we can say that we go up one and we go right four. When we plot this on a graph (the graph is attached), we get the same exact formula we found. **In the graph, I plotted the line 
**. Hope this helped!
Here, we have the slope