CCSS.Math.Cont.8.F.A.1 ( Grade 8 ): Understand that a function is a rule that assigns to each input exactly one output. The graph of a function is the set of ordered pairs consisting of an input and the corresponding output.

CCSS.Math.Cont.8.F.A.3 ( Grade 8 ): Interpret the equation y = mx + b as defining a linear function, whose graph is a straight line; give examples of functions that are not linear.

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