Mathematics (2019) Grade(s): 8

MA19.8.13

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

Knowledge

Students know:
  • how to interpret a graph, table, mapping, and ordered pairs.

Skills

Students are able to:
  • give an accurate definition of a function.
  • Analyze graphs, tables, mappings, and sets of ordered pairs to determine if a relation is a function.

Understanding

Students understand that:
  • Functions assign every input one output, but they may see outputs repeat.

Vocabulary

  • Relation
  • Function
  • Input
  • Output
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