2-1 relations and functions

Question 1

relation

Answer 1

is a set of pairs of input and output values.

Question 2

domain

Answer 2

is the set of all inputs, or x coordinates of the ordered pairs.

Question 3

range

Answer 3

is the set of all outputs, or y coordinates of the ordered pairs.

Question 4

mapping diagram

Answer 4

another way to show a relation. links element of the domain with corresponding elements of the range.

Question 5

function

Answer 5

is a relation in which each element of the domain is paired with exactly one element in the range

Question 6

vertical line test

Answer 6

a relation to tell whether the relation is a function.

Question 7

function notation

Answer 7

f(x) as f of x or a function f of x note that f(x) does not mean f times x.