# Lesson 1

Relation - any pairing of a set of inputs with a set of outputs

Domain - set of inputs

Range - set of outputs

Ordered Pairs

Table

Graph

Mapping

Equation

(1, 2)

(-2, 4)

(0, -3)

x | y |

1 | 2 |

-2 | 4 |

0 | -3 |

mapping shows how each item in the domain is paired with an element in the range.

x=2y

Independent Variable - Domain/Input

Dependent Variable - Range/output

same thing

Discrete Function - Specific values in D&R

Continuous Function - Every value between