2.1: Relations and functions Flashcards
1
Q
Relation
A
A set of pairs of input and output values.
2
Q
domain
A
The set of all inputs, or x-coordinates of all the ordered pairs.
3
Q
range
A
the set of all outputs, or y-coordinates or the ordered pairs.
4
Q
mapping diagram
A
Links elements of the domain with corresponding elements of the range.
5
Q
function
A
A relation in which each element of the domain is paired with exactly one element in the range.
6
Q
vertical-line test
A
use on the graph of a relation to tell whether the relation is a function.
7
Q
function notation
A
f(x) as “f of x” or “a function f of x” note that f(x)does not mean “f times x”.
