To function properly, a rainwater outflow pipe must drop exactly 1 inch for every 25 inches of horizontal distance. a 40 feet long rainwater pipe runs under the edge of a roof. what is the vertical distance, in inches, the pipe must drop between its ends? round your answer to the nearest tenth.

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

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