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Mathematics (2019) Grade(s): 8


Determine whether a relation is a function, defining a function as a rule that assigns to each input (independent value) exactly one output (dependent value), and given a graph, table, mapping, or set of ordered pairs.

Unpacked Content


Students know:
  • how to apply order of operations.
  • That every input will produce one output for a given function.


Students are able to:
  • analyze a rule or an equation
  • Substitute given values for the input to produce a desired output.


Students should understand that:
  • An output for any function is controlled by the input for that function. This is important to help reinforce/establish the concept of inputs being the independent variable and outputs representing the dependent variable.


  • Evaluate
  • Input
  • Output
  • Function