Relations and Functions

A relation is...

• a set of ordered pairs whose x values don't repeat

• a set of ordered pairs whose y values don't repeat

• any set of ordered pairs

• the domain of a function

Tags

CCSS.8.F.A.1

Official term for a "graph"

• function

• relation

• domain

• coordinate system

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Any x-values that are part of a relation are called _________.

• the domain

• the function

• the origins

• the range

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

A function is...

• any relation

• a relation such that the x values are all unique

• a relation such that the y values are all unique

• a relation such that the range doesn't repeat

Tags

CCSS.8.F.A.1

Method used to verify if something on a graph is a function

• range test

• domain test

• horizontal line test

• vertical line test

State the range of this relation: {(5, -3), (-1, 0), (7, 8), (4, -3)}

Is this relation a function?

• {-3, 0, 8}

  yes

• {-3, 0, 8}

  no

• {-1, 4, 5, 7}

  yes

• {-1, 4, 5, 7}

  no

Tags

CCSS.8.F.A.1

What does this mapping represent?

• both a relation and a function

• only a relation

• only a function

• neither a relation or function

Tags

CCSS.8.F.A.1

If f(x) = 3x - 7, find f(-2).

Tags

CCSS.HSF.IF.A.2

If f(x) = 3x - 7, find the x value for which f(x) = 20.

• x = 13/3

• x = 9

• x = 3/13

• x = 1/9

Tags

CCSS.HSF.IF.A.2

Using the table, find x when f(x) = 2.

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1