Correspondence and relations
Represent paired quantities using tables, words, and formulas, and check a rule against its conditions.
Meaning
A correspondence links objects in one set with objects in another. A relation describes connections between objects; tables and rules organize these connections.
Example
Linking seat numbers 1, 2, and 3 to Minsu, Sua, and Jiwoo lets you find a person from a seat number. Conversely, one person might reserve several seats. Not every relation is a function. A function must assign exactly one output to each specified input.
Practice for this concept
Scope and references
Topics
Pairing quantities, correspondence tables, expressing rules with formulas
Learning goal
Represent paired quantities using tables, words, and formulas, and check a rule against its conditions.
Helpful background
Pair quantities and compare matching inputs and outputs.
Reading functional relationships
Does not cover the shapes of coordinate graphs or every type of function.