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.
Water supply-line break or hot-water tank failure. Sometimes, a flood is due to a break in the homeâs internal water supply plumbing or failure of the hot-water tank. This can result from aging plumbing or equipment, a puncture of a pipe during construction, or freezing-induced splitting of a pipe.