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## Graphs Tell a Story What story does this graph tell?

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**What story does this graph tell? – Without Labels and**units, it is difficult to know the story…. Water Depth inches Time minutes**Water level in a bathtub**It is also important to include a title to specifically describe what the data pertains to. Water Depth inches Time minutes**Your turn…..**• Draw a graph of an event, and describe the event with words (write a story). • Include labels, units, and a title with your graph.**Shapes of graphs.**• In nature, there are only a few basic graph shapes that describe many phenomenon such as gravity, light intensities, growth and decay rates, etc. • In this class, we will focus on four of these shapes of graphs. • In science, the objective of a graph is often to describe the relationship between the independent and dependent variables. • The relation between variables can be stated as an equation… The equation of the graphed line.**If the graph is not yet a line (linear), but is one of the**simple shapes we will soon see, the graph can usually be made into a line by raising the independent variable ( the x-axis) to a power.**The Graph of a SquareOr graph of the independent variable**raised to a power.**The Graph of an Inverse relationOr graph of the independent**x-axis raised to the -1 power.**Determine the relation which the given data describes.**• X Y • 1 • 4 • 9 • 17 • 26 • 36 • 50