For example, \(y=\frac{4}{x-2}\): Note that as the graph approaches x=2 from the left, the curve drops rapidly towards negative infinity. This is because the numerator is staying at 4, and the denominator is getting close to 0. That means that the fraction itself is getting very big and negative.
Causes of flooding. A flood occurs when a river bursts its banks and the water spills onto the floodplain. Flooding tends to be caused by heavy rain: the faster the rainwater reaches the river channel [river channel: The part of the river that holds the water. ] , the more likely it is to flood.
Flooding occurs in North Dakota due to large amounts of snowfall, not just in North Dakota but also in Montana. Add to that lots of rain, and the flooding increases. Since the â¦ land in North Dakota is flat, it takes the rivers longer to move the water and contributes to the flooding. Floods can occur when rivers and streams run over their banks. Although made to prevent floods from happening, dams and levees that experience breakage can also cause flooding.