start at the first point which in this case is (-1,-4). then go up 3 (since thats where the next point is) and over to the right 1 (since thats where the point is lol). since the line is positive, then the answer is 3/1 or 3.
slope is rise over run in other words it's the difference from one point to the other in y/x so you go from one point and count how many tiles up then how many times left or right. the slope of this line is 4
