A helicopter is hovering over a landing pad 100 m from where
you are standing. The
helicopter's angle of elevation
with the ground is 15°. What is
the altitude (height) of the
helicopter?

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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