Functions & Relations

A relation pairs each input with exactly one output is a

• congruence

• similarity

• function

• mathematical equation

Determine if the relation is a function

• Not a function, each input has more than one output

• Yes it is a function, because each input has exactly on output

• Not a function, input is equal to output

• Yes it is a function, -1/2 is a fraction of 2

Determine if the relation is a function

• Yes, each input has one output

• Yes, each output has one input

• No, because the pattern is 4

• No, each input is the same as the output

Is the relation a function?

• Yes, each input has one output

• No, each input has more than one output

• No, the cost of the movies is different

• Yes, each output has one input

Is this table a function or not a function? 

• Function

• Not a Function

Is relation shown a function?

• YES

• NO

What is the range of the mapping?

• {1, 2, 4}

• {0, 1, 2, 3}

• {0, 3}

• {1, 4}

List the ordered pairs

• Input and Output

• (-1, 1), (-2, 1), (-3,2), (-4,2)

• (1,1) (2,4)

• (1,-1), (1,-2), (2,-3), (2,-4)

All of the x values of a relation are called what?

• Domain

• Range

• Relation

• Function

All of the y values of a relation are called what?

• Domain

• Range

• Relation

• Function